Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall

Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall
PowerPoint presentation to accompany Visualizing Technology, by Debra Geoghan. Chapter 4 Hardware Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Objectives Explain the function of the CPU. Identify the parts of a system unit and motherboard. Compare different types of storage devices. List different input devices and their uses. List different video and audio output devices and their uses. Compare the features of different types of printers. Explain and provide examples of the concept of adaptive technology. Discuss the different communication devices that can be used. This chapter explains computer hardware. The chapter objectives are: 1. Explain the function of the CPU. 2. Identify the parts of a system unit and motherboard. 3. Compare different types of storage devices. 4. List different input devices and their uses. 5. List different video and audio output devices and their uses. 6. Compare the features of different types of printers. 7. Explain and provide examples of the concept of adaptive technology. 8. Discuss the different communication devices that can be used. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Objective 1: Overview The CPU: The Brains of the Operation Examine the CPU: ALU and the control unit Discuss the four steps of the instruction cycle Pipelining vs. parallel processing Define and discuss multicore processor Key Terms Arithmetic logic unit (ALU) and control unit Central processing unit (CPU) Clock speed and Gigahertz (GHz) Instruction cycle Multicore processor Parallel processing and pipelining processor This section examines the CPU, discusses the instruction cycle, and covers the various processing options. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Functions of the CPU Central Processing Unit (CPU): Brain of the computer Housed inside system unit of the motherboard Two parts Arithmetic Logic Unit (ALU): Performs arithmetic and logic Control Unit: Manages data through CPU Three main functions: Execute instructions Perform calculations Make decisions The central processing unit (CPU) is the brain of the computer. It is housed inside the system unit of the motherboard. It is made up of two parts: the ALU and the control unit. The arithmetic logic unit (ALU) performs all the mathematical and logical operations. The control unit manages data through the CPU. Its three main functions are executing instructions, performing calculations, and making decisions. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Instruction Cycle Fetch and Execute or Machine Cycle
The instruction cycle, sometimes called the fetch and execute or machine cycle, is a four-part cycle. It is the process by which a computer “fetches” an instruction from memory. It then “decodes” what actions the instruction requires, and “executes” those actions. The results are then “stored” in memory. This cycle is continuously repeated by the CPU. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

CPU Performance Works so fast the user does not realize what is happening Clock speed: Speed at which the processor executes the machine cycle Gigahertz (GHz): How speed is measured, billions of cycles per second The CPU works so fast we don’t realize what’s happening. The speed at which the processor executes the machine cycle is called clock speed. The clock speed is measured in gigahertz. If a CPU runs at 3 GHz, it means that the processor executes 3 billion data cycles per second. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

CPU Performance Pipelining: Used by a single processor Process is like a factory assembly line Parallel processing: Uses multiple processors or multicore processors to divide work Each processor can use pipelining to further boost processing Multicore processor: Two or more processors integrated on a single chip Increases processing speed Reduces energy consumption Pipelining is a process used by a single processor. Once the first instruction has moved from fetch to decode, the processor fetches the next instruction. This is much like an assembly line. Parallel processing uses multiple processors or multicore processors. This divides the work and each processor can use pipelining to further boost performance. Multicore processing is when there are two or more processors on a single chip. Multicore processing increases processing speed and reduces energy consumption. The image on the slide illustrates a multicore processor. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

CPU Performance Processing generates heat To keep CPU cool: Heat sink Cooling fan Working quickly and using multicore processors generates a lot of heat. Excessive heat can damage a processor or cause it to fail. To keep processors from overheating, a heat sink and a cooling fan are installed to keep the CPU cool. The heat sink draws heat away from the processor using a cooler material. The cooling fan uses moving air to carry off excess heat. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

What is the fastest processor available today for desktop computers? Notebooks? Netbooks? What are the two main manufacturers of processors today? What is the fastest processor available today for desktop computers? Notebooks? Netbooks? What are the two main manufacturers of processors today? Answers may vary, yet should contain the following: 2 main manufacturers today are: Intel and AMD Desktop – Intel® Core™ i7-3960X Notebook – Intel® Core™ i7-3920XM Netbook – N2800 / 1.86 GHz Intel Atom Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Objective 2: Overview Getting to Know Your System Unit and Motherboard Identify and locate the parts of a motherboard Identify and locate the parts of the system unit Understand how information flows between components over data buses Identify drive controllers and interfaces Identify and locate ports and connectors Differentiate between the types of memory This section identifies and locates the parts of the system unit and motherboard. It explains how information flows over data buses. It also identifies drive controllers, ports, and connectors. Lastly, it discusses the different types of memory. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Objective 2: Overview Getting to Know Your System Unit and Motherboard Key Terms Hot-swappable Parallel ports AGP IEEE 1934 SATA BIOS Memory System unit Bluetooth Motherboard USB Cache memory PCI USB hub CMOS PCIe Data bus Port Drive controller PS/2 port EIDE RAM Expansion card ROM FireWire Serial ports The key terms for this objective are: AGP, BIOS, Bluetooth, cache memory, CMOS, data bus, drive controller, EIDE, expansion card, FireWire, hot-swappable, IEEE 1934, memory, motherboard, PCI, PCIe, port, PS/2 port, RAM, ROM, serial and parallel ports, SATA, system unit, USB, and USB hub. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

The Motherboard The Main Circuit Board of the Computer
PCIe slot (blue) PCI slot (white) The main circuit board or motherboard houses not only the CPU, but also drive controllers, interfaces, expansion slots, data buses, ports, connectors, BIOS, and memory. The drive controllers provide a drive interface and connect disk drives to the processor. SATA is the standard internal drive interface. EIDE is older technology and can be found on older systems. The PCI slots are for expansion cards or adapter cards and plug directly onto the motherboard. EIDE controller (green) Memory slots (orange) SATA controllers (orange) Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall

The System Unit The Physical Case
Power supply Processor and cooling fan Expansion cards The system unit is the physical case or chassis. It protects the power supply, motherboard, CPU, and memory. The system unit holds everything together. In this image the CPU and motherboard are obscured by the other components. Drive bays Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall

Drive Controller & Interfaces Connect Disk Drives to the Processor
SATA cable EIDE cable Sound card The drive controller and interfaces connect disk drives to the processor. The sound card and network card are just two examples of expansion cards. These plug into the PCI slot of the motherboard. The SATA cable is the standard internal drive interface. SATA is smaller and faster than EIDE cable. EIDE is older technology, yet can still be found in computers today. Network card Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall

Ports & Connectors Connect Peripherals to the Motherboard
PS/2 Keyboard mouse (purple/green) Standard (VGA) video (blue) DVI (white) Ethernet (network) Ports are used to connect peripherals to the motherboard. The most common types are USB and FireWire. Audio ports connect audio peripheral devices. The Ethernet port connects a system to a network. Serial ports and parallel ports are not typically found on modern computers. PS/2 ports are used to connect a mouse or keyboard, but these have largely been replaced by USB. HDMI video USB 3 (blue) Audio Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Ports & Connectors Connect Peripherals to the Motherboard
FireWire USB USB Hub Ports and connectors connect peripherals to the motherboard. The USB port is a standard port type used to connect many kinds of devices. An advantage of USB devices is that they are hot-swappable. That means they can be plugged in and unplugged without turning off the computer. A USB hub is a device used to connect multiple USB devices to a single USB port. FireWire is a hot-swappable port that can connect up to 63 devices per port. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Memory Temporary Storage Holds Instructions & Data
Known as primary storage Types of memory used by computers: Random Access Memory (RAM): Volatile memory that holds the OS, programs, and data the computer is currently using Cache memory: Fast memory used to store frequently accessed information close to the processor Memory is temporary storage used to hold instructions and data. Memory is also known as primary storage. There are two types of memory used by computers, RAM and cache. RAM is random access memory. RAM is volatile memory that holds the OS, programs, and data the computer is currently using. Any information left in memory is lost when the power is turned off. Cache memory is very fast memory used to store frequently accessed information close to the processor. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall

Using the Internet, research RAM. What is the fastest RAM available today for desktops? Notebooks? Netbooks? What is the average amount of RAM for each type? Which type of RAM is found in the most expensive systems? Using the Internet, research RAM. What is the fastest RAM available today for desktops? Notebooks? Netbooks? What is the average amount of RAM for each type? Which type of RAM is found in the most expensive systems? Responses may vary, yet may include: SYSTEM AVG AMT RAM TYPE FOUND IN HIGH-END MACHINES Desktop 8 GB 10GB DDR3-1866MHz SDRAM Notebook 6 GB 8GB DDR3 System Memory Netbook 6 GB 8GB DDR3 System Memory Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Objective 3: Overview A Place for Everything … & Everything in Its Place Compare the different types of storage devices List the characteristics of each type of storage device Differentiate between optical and magnetic storage List and describe different types of memory cards Key Terms Blu-ray disc, CD, and DVD Flash drive and flash memory Hard drive Memory card Optical disc Solid-state storage This section compares the different types of storage devices and their characteristics. It also reviews the different types of memory cards. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Storage Devices Optical discs Solid-state storage Magnetic storage There are three categories of physical storage devices. Optical disc storage pertains to CDs, DVDs, and Blu-ray discs. The data is stored on these using a laser. The laser can read the variation of binary data. To read the information on optical discs, optical disc drives are used. This allows you to access them to insert and eject discs. Solid-state storage is nonmechanical. The data is stored using flash memory on a chip. There are no moving parts, therefore these are quiet and durable. Hard drives store data magnetically on metal or specially coated materials. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Solid State Drives Flash Drives: Up to 128 GB of information Also known as: Key drives Thumb drives Pen drives USB drives Memory cards: Storage in: Digital cameras Video games Other devices Examples: Secure Digital (SD) Micro SD xD-Picture Card (xD) Sometimes called key drives, thumb drives, pen drives, or USB drives, flash drives are small, portable, solid-state drives that can hold up to 128 GB of information. Memory cards are used for storage in digital cameras, video games, and other devices. Examples include Secure Digital (SD), micro SD, and xD-Picture Card (xD). Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall

Hard Drives Main mass-storage devices Form of nonvolatile storage When the computer is powered off, the data isn’t lost Types: Internal drives External drive The main mass-storage devices in a computer are hard drives. Hard drives are a form of nonvolatile storage; when the computer is powered off, the data isn’t lost. Internal drives are located inside the system unit. External drives may be attached as a peripheral device using a USB or FireWire connection. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall

Look at computer ads. What is the average size of a hard drive in desktop computers? Notebooks? Netbooks? Which types of optical drives are found in each of these types? Which other types of storage devices are listed? Can you add more storage later? Look at computer ads. Which is the average size of a hard drive in desktop computers? Notebooks? Netbooks? Which types of optical drives are found in each of these types? Which other types of storage devices are listed? Can you add more storage later? Answers will vary, yet may look like: Type Average Size Optical Drive Other Add/Expand Later desktop 1TB Yes *SD/SDHC/MMC/MS Expansion bays/external option Notebook GB Yes *SD/SDHC/MMC/MS External HD only Netbook GB No *SD/SDHC/MMC/MS External HD only *SD=Secure Digital SDHC=Secure Digital High Capacity MMC=MultiMedia Card MS=Memory Stick Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Objective 4: Overview What Goes In … Discuss the different types of input devices Discuss which devices input images, video, and audio Discuss the most common input devices Key Terms Biometric scanner Game controller Input device Joystick Keyboard Keypad Microphone Mouse RFID tag Scanner Stylus Touchpad Touch screen Webcam This section discusses the different types of input devices, which ones input images, video, and audio, and which ones are most common. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Input Devices Devices Used to Get Data into the Computer
Keyboard Keypad Mouse Touchpad Stylus An input device is any device used to get data into the computer. The keyboard and mouse are the most common way users get information into the computer. Other devices include the keypad, touchpad, and stylus. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Digital cameras & webcams Optical scanners RFID scanners Magnetic strip reader Biometric scanners There are many different ways for us to input data into the computer. Digital cameras capture still images and video. Digital webcams can be built into a computer or directly connected via USB or FireWire cable. Webcams are specialized video cameras that provide visual input for online communication. Optical scanners allow you to convert photos or documents into digital files. There are different types of scanners, but flatbeds are the most common type used in homes and offices. Radio frequency identification (RFID) scanners read information in a tag that contains a tiny antenna for receiving and sending a radio frequency signal. RFID tags are found on passports now. Magnetic strip readers read information encoded in the magnetic strip on plastic cards. Biometric scanners measure human characteristics, such as eye retinas and fingerprints. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Microphones Game controllers Joysticks Microphones convert sound into digital signals and are used to chat or as part of a voice recognition application. Microphones are also used in recording voice and music. Game controllers allow the user to interact with video games. There are special game controllers, including steering wheels, tennis racquets, and musical instruments. A joystick, usually mounted on a base, is typically used as a game controller, yet can also be used as a controlling device in factories. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

A mouse and keyboard are standard input devices. Think about how you might use your computer in the future. Which other input devices might you need? Pick one device and research current models and cost. Which model would you choose and why? A mouse and keyboard are standard input devices. Think about how you might use your computer in the future. Which other input devices might you need? Pick one device and research current models and cost. Which model would you choose and why? Answers will vary, but should have this general content: Device Cost Model Features that influence my decision: Scanner $150 Kodak ESP 7250 all in one printer/copier/scanner scan multiple images good reviews low cost ink Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Objective 5: Overview ... Must Come Out List the different video output devices and their uses List the different audio output devices and their uses Differentiate among CRT, LCD, OLED, and AMOLED Differentiate between DLP and LCD projectors Understand the purpose of the video card Understand the purpose of the audio card Key Terms DLP projector Headphones LCD and OLED LCD projector Legacy technology Output device Plasma monitor Projector Resolution and pixel Video/sound card This section discusses output devices and their uses. It also differentiates among the different types of monitors and covers the importance of video cards and audio cards. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Output Devices Information Returned to the User
Video Output Devices Audio Output Devices Monitors CRT LCD Plasma OLED Projectors DLP Speakers Headphones Printer Output Devices Inkjet Photo Dye-sublimation thermal Laser Plotters Multifunction Output devices return information to the user. The monitor and printer are the most common forms of output device. Printer output devices are discussed in the next objective. There are many monitor options for video output. The most popular types of monitors come in many different sizes, technologies, and price ranges. Monitor size is measured on the diagonal. Audio is another form of output device, for which speakers and headphones are typically used. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Video Output Devices CRT Cathode ray tube; considered legacy technology LCD Liquid crystal display; popular in desktops and notebooks Plasma Larger in size; mostly used with media center systems or in conference rooms OLED Organic light-emitting diode; considered next technology of monitors AMOLED Active matrix OLED screens; found in some mobile devices Sharper and have a wider viewing angle CRT, LCD, plasma, and OLED are video device options. CRT monitors use a cathode ray tube; they are big and use a lot of energy. CRTs are considered legacy technology because these monitors have been replaced by smaller, flat-panel monitors. LCDs, liquid crystal displays, are found on most desktop and notebook computers. Plasma monitors are available in larger screen sizes and are typically used in media centers or in conference rooms. OLED, organic light-emitting diode, is the next technology of monitors. OLEDs use very little energy and are 10 times more efficient than LCDs found today. This technology is still in the prototype stage. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Video Output Devices Information Returned to the User
Digital light processing (DLP) Liquid crystal display (LCD) Video projectors allow video images to be shown on large surfaces. The two projector types are digital light processing (DLP) and liquid crystal display (LCD). Your needs will determine which projector type is best. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

The Video Card Data signal and connection for a monitor or projector Also called: Graphics card Display adapter The data signal and connection for a monitor or projector are provided by the video card. The video card is also known as a “graphics card,” or “display adapter.” Modern video cards contain their own memory, called VRAM, and processor, called the GPU. These produce the best and fastest images. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Digital Visual Interface Ports
DVI (digital visual interface) HDMI S-Video (Super video) VGA (Video graphics array) Digital visual interface ports provide connections for flat-panel displays, projectors, TVs, and DVD players. A DVI (digital visual interface) port is the standard video port found on video cards. HDMI is a digital port that can transmit both audio and video signals. It is the standard connection for high-definition TVs, video game consoles, and other media devices. S-Video is an analog port used to connect a computer to a television. VGA (video graphics array) port is a legacy analog port used by CRT monitors and projectors. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall

Audio Output Devices Information Returned to the User
Speakers: Convert digital signals into sound Headphones: Audio output comes in the form of speakers and headphones. Both speakers and headphones convert digital signals into sound. Speakers can be integrated or connected to the speaker port on a sound card. Headphones can also be plugged directly into the headphone or speaker port of a computer. Headphones that include a microphone are called headsets. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Speakers or headphones
The Sound Card Microphone (red) MIDI (orange) Audio connections: Input devices Output devices Integrated on the motherboard Connected via: Expansion card External USB FireWire The sound card provides audio connections for both input and output devices. Sound cards can be integrated on the motherboard or connected through expansion cards, external USB, or FireWire. High-end sound cards support surround sound and can have connections for up to eight speakers. The MIDI port allows for several musical instrument devices to be connected to the computer, such as a MIDI keyboard or a synthesizer. The line-in port enables a user to connect an external audio device such as a cassette tape player, disc player, audio mixer, additional microphones, and so on to record or otherwise manipulate the incoming audio. The microphone port allows a user to connect a microphone. The speaker port allows a user to connect speakers or headphones. Line-In (blue) Speakers or headphones (green) Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

If you were going to purchase a new desktop computer today, one decision you would have to make is what type and size of monitor you would choose. Think about the room, lighting, and purpose. Determine the type and size of monitor you would need. Using the Internet, compare several models, and choose the one that best fits your needs. If you were going to purchase a new desktop computer today, one decision you would have to make is what type and size of monitor you would choose. Think about the room, lighting, and purpose. Determine the type and size of monitor you would need. Using the Internet, compare several models, and choose the one that best fits your needs. Answers may vary, yet should look like: Monitor LCD LED 3D Size HP $99 $169 NA 20” Acer $129 $99 NA 20” ViewSonic $109 $149 NA 19” LG $269 23” ASUS $349 23” Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Objective 6: Overview Pick a Printer Compare the different types of printers List and compare printer features Discuss the types of specialized printers Key Terms CMYK Dye-sublimation Inkjet printer Laser printer Multifunction device Photo printer PictBridge Plotter Thermal printer This section discusses printer options and print features. It also discusses different types of specialized printers. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Printer Options Inkjet: Sprays droplets of ink onto paper Photo: Prints high-quality photos Dye-sublimation: Uses heat to turn solid dye into a gas that is then transferred to special paper Thermal: Heats specially coated heat-sensitive paper, which changes color when heat is applied There are many options for printers, and your choice should be determined based on your needs. Inkjet printers work by spraying droplets of ink onto paper. Photo printers are designed to print high-quality photos. Dye-sublimation printers use heat to turn solid dye into a gas that’s then transferred to special paper. Thermal printers create an image by heating specially coated heat-sensitive paper, which changes color when heat is applied. Thermal Printer Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Printer Options Laser: Uses a laser beam to draw an image on a drum Plotter: Uses pens to draw an image on a roll of paper used to produce very large printouts Multifunction: Has built-in scanner, fax, copy, and print capabilities Laser printers use a laser beam to draw an image on a drum. Plotters use pens to draw an image on a roll of paper used to produce very large printouts. Multifunction printers have built-in scanner, fax, copy, and print capabilities. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

CMYK Cyan, Magenta, Yellow, Key (Black)
Colors used by inkjet and dye-sublimation printers CMYK are the colors used by inkjet and dye-sublimation printers. CMYK refers to the four inks used: cyan, magenta, yellow, and key (black). The K in CMYK stands for “key”: as in four-color printing, cyan, magenta, and yellow printing plates are carefully keyed or aligned with the “key” of the black “key plate.” Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

3D Printers Create objects such as prototypes and models Image is created by scanning an object or designed using computer software Creates the model by building layers of material Uses: Dental and medical imaging Paleontology Architecture Creating sculpture and jewelry And more! 3D printers can create objects such as prototypes and models. A digital image is created by scanning an object or designed using computer software. The 3D printer creates the model by building layers of material such as paper, polymers, resin, or even metal. 3D printing has many interesting uses such as dental and medical imaging, paleontology, architecture, and even creating sculpture and jewelry. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall

You need to purchase a printer. Think about the documents you will print. Will you print mostly text? Will you print photos? Do you want to connect a camera via USB or by memory card? Do you need to scan or fax? Using the Internet, compare several models, and choose the one that best fits your needs. You need to purchase a printer. Think about the documents you will print. Will you print mostly text? Will you print photos? Do you want to connect a camera via USB or by memory card? Do you need to scan or fax? Using the Internet, compare several models, and choose the one that best fits your needs? Answer may vary, yet may include: I chose the Kodak ESP 7250 because it was a middle of the road printer with copy and scan features. It has fast print speeds up to 32 ppm in black and up to 30 ppm in color. It is network-ready with built-in Ethernet and b/g/n wireless interfaces for simple connection to my home network. I can also send photos to the printer from my mobile phone. The color resolution is up to 9600 dpi optimized and has built-in memory card slots and supports Secure Digital, Secure Digital High Capacity, CompactFlash I/II, MultiMediaCard, Memory Stick, Memory Stick PRO, and xD-Picture Card formats. It also supports PictBridge technology. As a copier, it copies up to 27 cpm in black and up to 26 cpm in color. There are 2 paper trays that hold up to 40 sheets of photo paper and up to 100 sheets of plain paper. The scanner has 24-bit color and 8.5" x 11.7" scan area so I can scan multiple photos at one time. The price was good too, retailing at $ Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Objective 7: Overview Adaption: Making Technology Work for You Explain the concept of adaptive technology Provide examples of adaptive technology Key Term Adaptive technology This section discusses adaptive technology. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Adaptive Technology Assistive technology Used by individuals with disabilities to interact with technology Includes both hardware and software Modern OSs include accessibility settings Americans with Disabilities Act (ADA) requires employers to make reasonable accommodations for disabled employees Adaptive technology, also referred to as “assistive technology,” is used by individuals with disabilities to interact with technology. Adaptive technologies can occur with hardware and software. Modern operating systems include accessibility settings that you can personalize. The Americans with Disabilities Act of 1990 requires employers to make reasonable accommodations, adjustments, or modifications to enable people with disabilities to enjoy equal employment opportunities. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Adaptive Input Devices Adaptive Output Devices
Adaptive Technology Adaptive Input Devices Braille-writing devices Eye-driven keyboards Keyboards with locator dots or large-print key labels On-screen keyboards Voice recognition software Adaptive Output Devices Standard monitors can be adapted by magnifying the screen Speech synthesis screen-reader software and audio alerts Closed captions and visual notifications Braille embossers translate text to Braille Because of the ADA, many hardware and software vendors have developed adaptive technology. Adaptive input devices include Braille-writing devices, eye-driven keyboards, keyboards with locator dots, keyboards with large-print key labels, on-screen keyboards, and voice-recognition software. Adaptive output devices include standard monitors with magnified screens, speech synthesis screen-reader software, closed captions, visual notifications, and Braille embossers. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Adaptive Technology for Everyone
While adaptive technology can make technology more accessible for individuals with disabilities, it also benefits those without disabilities. Enlarging the screen, touch-sensitive surfaces, easy-to-read buttons, and other accommodations make accessing technology easier for everybody. Windows includes Magnifier, a screen magnification program that can be used to enlarge portions of the screen, as it has in this Word document. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall

Are there any adaptive technology devices that you would include to meet the needs of any of the users for this computer? Are there any adaptive technology devices that you would include to meet the needs of any of the users for this computer? Answer may vary, yet may include: My mom has a difficult time using the keyboard so I would like to purchase Dragon speech recognition software. This will make it easier for anyone to use the computer. This software is great, you talk, and it types. This will help my mom create and edit documents or s, launch applications, open files, control the mouse, and more with just her voice. I think she will benefit from this feature a lot! Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Objective 8: Overview Communicate, Communicate, Communicate Discuss the different types of communications devices Discuss how these communications devices can be used Discuss the difference between analog and digital signals Key Terms Communication devices Modem Network adapter This section discusses communication options and the difference between analog and digital signals. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Communication Devices Network Adapters| Modems | Fax Devices
Communication devices serve as both input and output devices Allows you to connect to other devices on a network or the Internet Includes: Network adapters Modems Fax machines Communication devices include network adapters, modems, and fax devices. These allow you to connect to other devices on a network or the Internet. Communication devices allow us to connect our computers to other devices in our own homes and to the world. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Communication Devices Network Adapters| Modems | Fax Devices
Establish a connection with a network Modems: Connect a computer to a telephone line Used for dial-up Internet access Fax devices: Stand-alone Part of a multifunction device Built into a modem Network adapters are used to establish a connection to a network. These may be onboard expansion cards or USB devices, and may be wired or wireless. Wired cards are sometimes called network interface cards (NIC), or Ethernet cards. Modems are used to connect a computer to a telephone line and most often used for dial-up Internet access. A cable modem is a special type of modem that connects to the cable system to provide fast Internet access. Some modems also include the ability to send and receive faxes; these are referred to as a fax modems. Fax devices can be stand-alone, part of a multifunction device, or built into a modem. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Communication Devices Analog & Digital Signals
Analog signals: Continuous waves Digital signals: On/off transmissions A modem modulates digital data into an analog signal. Analog input devices convert data signals into continuous electronic waves or pulses. Analog output devices translate the electronic pulses back into audio and video signals. In digital devices, the audio and video data is represented by 1s and 0s. Digital signals are less prone to interference than analog signals and can carry more data. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

Think about the location for this computer. What type of communication devices do you need to connect to the Internet? Will it connect to a network? Is it wired or wireless? Do you need fax capabilities? Think about the location for this computer. What type of communication devices do you need to connect to the Internet? Will it connect to a network? Is it wired or wireless? Do you need fax capabilities? Answers will vary, yet may look like: The location of this computer will be in my home, and because we already have a desktop I will purchase a laptop: that way I can take it with me to school. I most definitively want to access the Internet, so I will need an Ethernet card installed. I will use the wireless modem that is attached to our home desktop PC. This modem will allow me to connect to the Internet. As for fax capabilities, I do not need this since this laptop is used strictly for my school work. Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall <#>

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher. Printed in the United States of America. Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall Visualizing Technology Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall

Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall

Similar presentations

Presentation on theme: "Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall"— Presentation transcript:

Similar presentations

About project

Feedback

Log in

Auth with social network:

Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall

Similar presentations

Presentation on theme: "Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall"— Presentation transcript:

Similar presentations

About project

Feedback