Presentation is loading. Please wait.

Presentation is loading. Please wait.

Objectives Overview Identify the keys and buttons commonly found on desktop computer keyboards, and describe how keyboards for mobile computers and devices.

Similar presentations


Presentation on theme: "Objectives Overview Identify the keys and buttons commonly found on desktop computer keyboards, and describe how keyboards for mobile computers and devices."— Presentation transcript:

1

2 Objectives Overview Identify the keys and buttons commonly found on desktop computer keyboards, and describe how keyboards for mobile computers and devices differ from desktop computer keyboards Describe different mouse types Describe various types of touch screens and explain how a touch-sensitive pad works Describe various types of pen input See Page 187 for Detailed Objectives Discovering Computers Fundamentals, 2010 Edition Chapter 5

3 Objectives Overview Explain other types of input Explain the characteristics of LCD monitors, LCD screens, and CRT monitors Summarize the various types of printers Identify the purpose and features of speakers, headphones, and ear-buds; data projectors; and interactive whiteboards Identify input and output options for physically challenged users See Page 187 for Detailed Objectives Discovering Computers Fundamentals, 2010 Edition Chapter 5

4 Discovering Computers Fundamentals, 2010 Edition Chapter 5
What Is Input? Input is any data and instructions entered into the memory of a computer Pages 188– 189 Figure 5-1 Discovering Computers Fundamentals, 2010 Edition Chapter 5

5 Discovering Computers Fundamentals, 2010 Edition Chapter 5
What Is Input? An input device is any hardware component that allows users to enter data and instructions into a computer Page 188 Discovering Computers Fundamentals, 2010 Edition Chapter 5

6 Keyboard and Pointing Devices
A pointing device is an input device that allows a user to control a pointer on the screen A pointer is a small symbol on the screen whose location and shape change as a user moves a pointing device Page 189 Discovering Computers Fundamentals, 2010 Edition Chapter 5

7 Keyboard and Pointing Devices
A keyboard is an input device that contains keys users press to enter data and instructions into a computer Page 190 Figure 5-2 Discovering Computers Fundamentals, 2010 Edition Chapter 5

8 Keyboard and Pointing Devices
Most desktop computer keyboards have… Between 101 and 105 keys A numeric keypad on the right side of the keyboard Function keys, CTRL keys, ALT keys, and arrow keys WINDOWS key APPLICATION key Toggle keys Page 190 Discovering Computers Fundamentals, 2010 Edition Chapter 5

9 Keyboard and Pointing Devices
An ergonomic keyboard has a design that reduces the chance of wrist and hand injuries Ergonomics incorporates comfort, efficiency, and safety into the design of the workplace Click to view Web Link, click Chapter 5, Click Web Link from left navigation, then click Ergonomics below Chapter 5 Page 190 Discovering Computers Fundamentals, 2010 Edition Chapter 5

10 Keyboard and Pointing Devices
Keyboards on mobile devices typically are smaller and/or have fewer keys Some phones have predictive text input, which saves time when entering text using the phone’s keypad Page 191 Figure 5-3 Discovering Computers Fundamentals, 2010 Edition Chapter 5

11 Keyboard and Pointing Devices
A mouse is a pointing device that fits under the palm of your hand comfortably Most widely used pointing device on desktop computers A mouse can be wired or wireless Pages 191 – 192 Figure 5-4 Discovering Computers Fundamentals, 2010 Edition Chapter 5

12 Keyboard and Pointing Devices
Trackball A trackball is a stationary pointing device with a ball on its top or side Touchpad A touchpad is a small, flat, rectangular pointing device that is sensitive to pressure and motion Pointing Stick A pointing stick is a pressure-sensitive pointing device shaped like a pencil eraser that is positioned between keys on a keyboard Page 192 Figures 5-5 – 5-7 Discovering Computers Fundamentals, 2010 Edition Chapter 5

13 Touch Screens and Touch-Sensitive Pads
A touch screen is a touch-sensitive display device Click to view Web Link, click Chapter 5, Click Web Link from left navigation, then click Multi-Touch Screens below Chapter 5 Page 193 Figure 5-8 Discovering Computers Fundamentals, 2010 Edition Chapter 5

14 Touch Screens and Touch-Sensitive Pads
Microsoft Surface Touch-sensitive pads Page 193 Figures 5-9 – 5-10 Discovering Computers Fundamentals, 2010 Edition Chapter 5

15 Discovering Computers Fundamentals, 2010 Edition Chapter 5
Pen Input With pen input, you touch a stylus or digital pen on a flat surface to write, draw, or make selections Page 194 Figure 5-11 Discovering Computers Fundamentals, 2010 Edition Chapter 5

16 Discovering Computers Fundamentals, 2010 Edition Chapter 5
Other Types of Input Page 195 Figure 5-12 Discovering Computers Fundamentals, 2010 Edition Chapter 5

17 Other Types of Input Video games and computer games use a game controller as the input device that directs movements and actions of on-screen objects Gamepads Joysticks and Wheels Light guns Dance pads Motion-sensing controllers Wii Remote Click to view Web Link, click Chapter 5, Click Web Link from left navigation, then click Wii Remote below Chapter 5 Pages Discovering Computers Fundamentals, 2010 Edition Chapter 5

18 Discovering Computers Fundamentals, 2010 Edition Chapter 5
Other Types of Input Page 196 Figure 5-13 Discovering Computers Fundamentals, 2010 Edition Chapter 5

19 Discovering Computers Fundamentals, 2010 Edition Chapter 5
Other Types of Input A digital camera is a mobile device that allows users to take pictures and store them digitally Studio cameras Field cameras Point-and-shoot camera Page 197 Discovering Computers Fundamentals, 2010 Edition Chapter 5

20 Discovering Computers Fundamentals, 2010 Edition Chapter 5
Other Types of Input Page 197 Figure 5-14 Discovering Computers Fundamentals, 2010 Edition Chapter 5

21 Other Types of Input Two factors affect the quality of digital camera photos: Resolution Resolution is the number of horizontal and vertical pictures in a display device A pixel is the smallest element in an electronic display Number of bits stored in each pixel Each pixel consists of one or more bits of data The more bits used to represent a pixel, the more colors and shades of gray that can be represented Page 198 Discovering Computers Fundamentals, 2010 Edition Chapter 5

22 Discovering Computers Fundamentals, 2010 Edition Chapter 5
Other Types of Input Voice input is the process of entering input by speaking into a microphone Voice recognition is the computer’s capability of distinguishing spoken words Audio input is the process of entering any sound into the computer Page 198 Discovering Computers Fundamentals, 2010 Edition Chapter 5

23 Discovering Computers Fundamentals, 2010 Edition Chapter 5
Other Types of Input Music production software allows users to record, compose, mix, and edit music and sounds Page 198 Figure 5-15 Discovering Computers Fundamentals, 2010 Edition Chapter 5

24 Discovering Computers Fundamentals, 2010 Edition Chapter 5
Other Types of Input Video input is the process of capturing full-motion images and storing them on a computer’s storage medium Record video on a digital video (DV) camera or use a video capture card to convert analog signals to digital Connect the camera to a port on the system unit Transfer video and images Page 199 Discovering Computers Fundamentals, 2010 Edition Chapter 5

25 Video: Video Editing on Your Computer
CLICK TO START Discovering Computers Fundamentals, 2010 Edition Chapter 5

26 Other Types of Input A Web cam is a type of digital video camera that enables a user to: Capture video and still images Send messages with video attachments Add live images to instant messages Broadcast live images over the Internet Make video telephone calls Page 199 Discovering Computers Fundamentals, 2010 Edition Chapter 5

27 Discovering Computers Fundamentals, 2010 Edition Chapter 5
Other Types of Input A video conference is a meeting between two or more geographically separated people Page 199 Figures 5-16 – 5-17 Discovering Computers Fundamentals, 2010 Edition Chapter 5

28 Discovering Computers Fundamentals, 2010 Edition Chapter 5
Other Types of Input A flatbed scanner creates a file of the document in memory Works in a manner similar to a copy machine Page 200 Figure 5-18 Discovering Computers Fundamentals, 2010 Edition Chapter 5

29 Discovering Computers Fundamentals, 2010 Edition Chapter 5
Other Types of Input Optical character recognition (OCR) involves reading characters from ordinary documents A turnaround document is a document you return to the company that creates and sends it Page 200 Figure 5-19 Discovering Computers Fundamentals, 2010 Edition Chapter 5

30 Discovering Computers Fundamentals, 2010 Edition Chapter 5
Other Types of Input Optical mark recognition (OMR) reads hand-drawn marks such as small circles or rectangles An OMR device scans the documents and matches the patterns of light Page 200 Discovering Computers Fundamentals, 2010 Edition Chapter 5

31 Discovering Computers Fundamentals, 2010 Edition Chapter 5
Other Types of Input A bar code reader, also called a bar code scanner uses laser beams to read bar codes Page 201 Figure 5-20 Discovering Computers Fundamentals, 2010 Edition Chapter 5

32 Other Types of Input RFID (radio frequency identification) uses radio signals to communicate with a tag placed in or attached to an object An RFID reader reads information on the tag via radio waves RFID can track: Inventory Location of soldiers Employee wardrobes Airline baggage Gauging tire pressure and temperature Library books Prepaid tolls Page 201 Discovering Computers Fundamentals, 2010 Edition Chapter 5

33 Discovering Computers Fundamentals, 2010 Edition Chapter 5
Other Types of Input Magnetic stripe card readers read the magnetic stripe on the back of cards such as: Credit cards Entertainment cards Bank cards Other similar cards Pages Figure 5-22 Discovering Computers Fundamentals, 2010 Edition Chapter 5

34 Discovering Computers Fundamentals, 2010 Edition Chapter 5
Other Types of Input MICR (magnetic ink character recognition) devices read text printed with magnetized ink An MICR reader converts MICR characters into a form the computer can process Banking industry uses MICR for check processing Page 202 Figure 5-23 Discovering Computers Fundamentals, 2010 Edition Chapter 5

35 Other Types of Input Biometrics authenticates a person’s identity by verifying a personal characteristic Fingerprint reader Face recognition system Hand geometry system Voice verification system Signature verification system Iris recognition system Retinal scanners Pages Discovering Computers Fundamentals, 2010 Edition Chapter 5

36 Other Types of Input iris recognition system fingerprint reader
Click to view Web Link, click Chapter 5, Click Web Link from left navigation, then click Biometric Input below Chapter 5 Pages 202 – 203 Figures 5-24 – 5-25 Discovering Computers Fundamentals, 2010 Edition Chapter 5

37 Other Types of Input A terminal is a computer that allows users to send data to and/or receive information from a host computer A POS terminal records purchases, processes payment, and updates inventory An automated teller machine (ATM) allows users to access their bank accounts A DVD kiosk is a self-service DVD rental machine Pages 204 – 205 Figures 5-26 – 5-28 Discovering Computers Fundamentals, 2010 Edition Chapter 5

38 Discovering Computers 2010: Living in a Digital World Chapter 6
What Is Output? Output is data that has been processed into a useful form Pages 206 – 207 Figure 5-29 Discovering Computers 2010: Living in a Digital World Chapter 6

39 What Is Output? An output device is any type of hardware component that conveys information to one or more people Display devices Printers Speakers, headphones, and earbuds Data projectors Interactive whiteboards Page 206 Discovering Computers 2010: Living in a Digital World Chapter 6

40 Discovering Computers 2010: Living in a Digital World Chapter 6
Display Devices A display device visually conveys text, graphics, and video information A monitor is packaged as a separate peripheral LCD monitor Widescreen Click to view Web Link, click Chapter 5, Click Web Link from left navigation, then click Widescreen LCD Monitors below Chapter 5 Pages 207 – 208 Figure 5-30 Discovering Computers 2010: Living in a Digital World Chapter 6

41 Discovering Computers 2010: Living in a Digital World Chapter 6
Display Devices Liquid crystal display (LCD) uses a liquid compound to present information on a display device Resolution Response time Brightness Dot pitch Contrast ratio Page 209 Discovering Computers 2010: Living in a Digital World Chapter 6

42 Discovering Computers 2010: Living in a Digital World Chapter 6
Display Devices Plasma monitors are display devices that use gas plasma technology and offer screen sizes up to 150 inches Page 210 Figure 5-32 Discovering Computers 2010: Living in a Digital World Chapter 6

43 Discovering Computers 2010: Living in a Digital World Chapter 6
Display Devices A CRT monitor is a desktop monitor that contains a cathode-ray tube Have a much larger footprint than do LCD monitors Page 210 Figure 5-33 Discovering Computers 2010: Living in a Digital World Chapter 6

44 Discovering Computers 2010: Living in a Digital World Chapter 6
Printers A printer produces text and graphics on a physical medium Before purchasing a printer, ask yourself a series of questions Page 211 Figure 5-34 Discovering Computers 2010: Living in a Digital World Chapter 6

45 Discovering Computers 2010: Living in a Digital World Chapter 6
Printers Page 212 Figure 5-35 Discovering Computers 2010: Living in a Digital World Chapter 6

46 Printers A nonimpact printer forms characters and graphics on a piece of paper without actually striking the paper Ink-jet printers Photo printers Laser printers Thermal printers Mobile printers Plotters Large-format printers Page 213 Discovering Computers 2010: Living in a Digital World Chapter 6

47 Discovering Computers 2010: Living in a Digital World Chapter 6
Printers An ink-jet printer forms characters and graphics by spraying tiny drops of liquid ink onto a piece of paper Color or black-and-white Printers with a higher dpi (dots per inch) produce a higher quality output Page 213 Figure 5-36 Discovering Computers 2010: Living in a Digital World Chapter 6

48 Discovering Computers 2010: Living in a Digital World Chapter 6
Printers A photo printer produces color photo-lab-quality pictures Most use ink-jet technology PictBridge allows you to print photos directly from a digital camera Print from a memory card and preview photos on a built-in LCD screen Page 214 Discovering Computers 2010: Living in a Digital World Chapter 6

49 Discovering Computers 2010: Living in a Digital World Chapter 6
Printers Click to view Web Link, click Chapter 5, Click Web Link from left navigation, then click Photo Printers below Chapter 5 Page 214 Figure 5-37 Discovering Computers 2010: Living in a Digital World Chapter 6

50 Discovering Computers 2010: Living in a Digital World Chapter 6
Printers Laser printer High-speed High-quality Color Black-and-white Click to view Web Link, click Chapter 5, Click Web Link from left navigation, then click Laser Printers below Chapter 5 Pages 214 – 215 Figure 5-38 Discovering Computers 2010: Living in a Digital World Chapter 6

51 Discovering Computers 2010: Living in a Digital World Chapter 6
Printers A multifunction peripheral (MFP) is a single device that prints, scans, copies, and in some cases, faxes Sometimes called an all-in-one device Page 215 Figure 5-39 Discovering Computers 2010: Living in a Digital World Chapter 6

52 Printers A thermal printer generates images by pushing electrically heated pins against the heat-sensitive paper Thermal wax-transfer printer Dye-sublimation printer Pages 215 – 216 Figure 5-40 Discovering Computers 2010: Living in a Digital World Chapter 6

53 Discovering Computers 2010: Living in a Digital World Chapter 6
Printers A mobile printer is a small, lightweight, battery-powered printer that allows a mobile user to print from a mobile device Page 216 Figure 5-41 Discovering Computers 2010: Living in a Digital World Chapter 6

54 Discovering Computers 2010: Living in a Digital World Chapter 6
Printers Plotters are used to produce high-quality drawings Large-format printers create photo-realistic quality color prints on a larger scale Page 216 Figure 5-42 Discovering Computers 2010: Living in a Digital World Chapter 6

55 Discovering Computers 2010: Living in a Digital World Chapter 6
Printers Impact printers form characters and graphics on a piece of paper by striking a mechanism against an inked ribbon that physically contacts the paper Dot-matrix printer Line printer Page 217 Discovering Computers 2010: Living in a Digital World Chapter 6

56 Discovering Computers 2010: Living in a Digital World Chapter 6
Printers A dot-matrix printer produces printed images when tiny wire pins on a print head mechanism strike an inked ribbon A line printer prints an entire line at a time Page 217 Figure 5-43 Discovering Computers 2010: Living in a Digital World Chapter 6

57 Discovering Computers 2010: Living in a Digital World Chapter 6
Other Output Devices An audio output device produces music, speech, or other sounds Most computer users attach speakers to their computers to: Generate higher-quality sounds for playing games Interact with multimedia presentations Listen to music View movies Page 217 Figure 5-44 Discovering Computers 2010: Living in a Digital World Chapter 6

58 Discovering Computers 2010: Living in a Digital World Chapter 6
Other Output Devices Headphones are speakers that cover your head or are placed outside of the ear Earbuds (also called earphones) rest inside the ear canal Click to view Web Link, click Chapter 5, Click Web Link from left navigation, then click Earbuds below Chapter 5 Page 218 Discovering Computers 2010: Living in a Digital World Chapter 6

59 Discovering Computers 2010: Living in a Digital World Chapter 6
Other Output Devices Voice output occurs when you hear a person’s voice or when the computer talks to you through the speakers Some Web sites dedicate themselves to providing voice output Often works with voice input VoIP uses voice output and voice input Page 218 Discovering Computers 2010: Living in a Digital World Chapter 6

60 Discovering Computers 2010: Living in a Digital World Chapter 6
Other Output Devices A data projector is a device that takes the text and images displaying on a computer screen and projects them on a larger screen Digital light processing (DLP) projector Page 218 Figure 5-45 Discovering Computers 2010: Living in a Digital World Chapter 6

61 Putting It All Together
Page 219 Figure 5-47 Discovering Computers 2010: Living in a Digital World Chapter 6

62 Putting It All Together
Page 219 Figure 5-47 Discovering Computers 2010: Living in a Digital World Chapter 6

63 Putting It All Together
Page 219 Figure 5-47 Discovering Computers 2010: Living in a Digital World Chapter 6

64 Input and Output Devices for Physically Challenged Users
Head-mounted pointer Braille printer Pages 220 – 221 Figures 5-47 – 5-48 Discovering Computers Fundamentals, 2010 Edition Chapter 5

65 Summary Various techniques for entering input and several commonly used input device Various methods of output and several commonly used output devices Page 222 Discovering Computers Fundamentals, 2010 Edition Chapter 5

66 Chapter 5 Complete


Download ppt "Objectives Overview Identify the keys and buttons commonly found on desktop computer keyboards, and describe how keyboards for mobile computers and devices."

Similar presentations


Ads by Google