Chapter 1 - Introduction This slide presentation is designed to be viewed as a Slide Show. If viewed as a Slide Show your will be able to observe the animation and you should have functional hyperlinks. When in the Slide Show view, click to advance the slide. If the presentation is working very slowly, you may want to save it to your computer and then run the show. I hope you find this presentation interesting.
Remember September 11, 2001 When I originally created this presentation, it was shortly after Sept. 11. When I updated my slides, I couldn’t delete these slides. I think we just have to remember! Click to advance slide
God may give you mercy, but we will not! Senator John McCain
COMPUTER LITERACY Knowing how to _____ a computer Knowledge and understanding of computers and how they are used in _____
What Is a Computer? A computer is an _____ device, operating under the control of _____ _____ in its own memory Accepts data (Input) Manipulates Data (Processing) Produces information (Output) Information Processing Cycle
D I _____ are changed into _____ (Facts)(Useful Form) Input _____ Output StorageCommunications
What is _____ computing? Involves reducing the _____ consumed and environmental _____ generated when using a computer Strategies include: Recycling Regulating manufacturing processes Extending the life of computers Immediately donating or properly disposing of replaced computers
THE COMPONENTS OF A COMPUTER Input Devices _____ Devices System Unit contains Processing Devices _____(RAM) Storage Devices Communications Devices InputProcessOutput Storage
Input Process Output Storage Input Output Communications Input
What is the _____ unit? Case that contains electronic components of the computer used to _____ data system unit
What are common components inside the system unit? Circuitry _____ Adapter ____ Sound card Modem card Video card Network card power supply ports drive bays processor memory sound card video card modem card network card
What is the _____ ? Main circuit board in system unit Contains adapter cards, processor chips, and memory chips processor chip adapter cards memory chips memory slots motherboard Expansion slots for adapter cards
What is storage? Storage holds _____, _____, and information for future use Storage _____ Physical material on which data is stored Hard disks, CD &DVDs, flash media more Floppy disks (no more, obsolete!) Storage _____ The mechanism that retrieves & records (reads/writes) data to and from the storage media
Types of storage media _____ disks, _____ media, CDs & DVDs, floppy disks, others?
What are communication devices? Hardware that enables a computer to send & receive data _____ _____ card Transmission media Cables, telephone lines, radio networks, satellites and other? Check WebopediaWebopedia for a definition
Why use a computer? Why is a computer so powerful? _____ Reliability Accuracy _____ Communications Close to the speed of light Low failure rate Process error free GIGO ! Total & instant recall Share resources: devices & data Garbage In Garbage Out
What is Computer Software? Computer programs A series of _____ that tells the computer _____ how to perform tasks Two general categories of software _____ Software Operating system Utility program
Systems Software Coordinates hardware and runs application software _____ system User interface _____ user interface (GUI – icons & menus) Microsoft Windows 98, ME & 2000, XP, Windows 7 Utility programs Help manage the computer, its devices & programs Examples include: Uninstall, format disks, add printers, etc.
Application Software Performs specific _____ Word Processing Spreadsheet Database Presentation Graphics Many other tasks
How do we obtain software? The operating system is usually bundled with the computer when purchased Some applications may be bundled with the computer _____ software Custom software _____ Freeware and public-domain software
COMPUTER SOFTWARE Software Development Computer programmers Programming languages Visual Basic C++ _____ _____ analyst Works with users & programmers to design programs
What are the elements of an Information System? When System Analysts work with an information system they must consider all of the elements _____ Software _____ People _____
What is a Network? A collection of computers & devices Sharing connected _____ Hardware (often wireless) Software Data _____ Area Network – LAN Office & close buildings like a campus _____ Area Network – WAN Large geographic area like to U Mary Fargo
What is a server? A server _____ the resources on a network _____ access the resources on the server
What is the Internet? A worldwide collection of _____
What is the Web? The World Wide Web is a _____ on or a part of the Internet Connects Web _____ containing Web _____ through a means of hyperlinks
What is the Internet/Web used for? Internet uses: _____ Accessing _____ Shopping Meeting people – social networking (Facebook) Entertainment Remember that the World Wide Web is one part/a service on the Internet Web _____ help navigate the WWW Microsoft Internet Explorer Netscape Navigator
What is _____ networking? A Web site that encourages members to share their interests, ideas, stories, photos, music, and videos with other registered users
The _____ Computer category What are the _____ Categories of Computers? Desktop computers includes 1 Two popular architectures are: 1. PCs & 2. MACs (Apple)
Can perform all of its input, processing, output, and storage activities by itself If the PC is not connected to another (host) computer It is said to be a “_____ _____ computer” PERSONAL COMPUTERS
What is a _____ ? Tower Model A very powerful PC (desktop) used for intense calculations & graphic intensive applications (graphic art, desktop publishing, multimedia, etc.)
1. Personal computers CATEGORIES OF COMPUTERS _____ Computers Notebook or laptop Tablet PC 2 Mobile _____ Smart Phones Digital cameras E-book readers Media players
What is a _____ PC? Useful for taking handwritten notes. Allows you to write on the screen using a digital pen
3 - _____ Consoles? A mobile computer using handheld controllers as input devices. Surgeons hone skills using the Wii system.
CATEGORIES OF COMPUTERS _____ CControl the access to hardware, software, & data PProvide a centralized storage area 4 1. Personal computers 2. Mobile computers 3. Game Consoles
_____ computers 1. Personal computers 2. Mobile computers 3. Game Consoles 5 4. Servers
Than Servers VVery powerful & expensive CCan handle hundreds or thousands of connected _____ simultaneously Mainframe Computers are
Fastest, most _____ computers Able to process more than one quadrillion instructions per second and growing! 1 quadrillion = 1,000 trillion 6 _____
How fast are these supercomputers? _____ = a floating point operation (I think it is a mathematical calculation of fractions.) I am going to think about one mathematical calculation. Kilo = 1,000 mathematical calculation per second Mega = 1,000,000 (a million) Giga = 1,000,000,000 (a billion; current PCs) Tera = 1,000,000,000,000 (a trillion) _____ = 1,000,000,000,000,000 (one _____ ) Currently (July, 2011) a Japanese supercomputer running at 8 petaflops is the world’s fastest computer Let’s try to understand the terminology used in the video (next slide).
Click to view video
7 - _____ computers? A special-purpose computer that functions as a component in a larger product Consumer Electronics Mobile and digital telephones Digital televisions Cameras Video recorders DVD players and recorders Answering machines Home Automation Devices Thermostats Sprinkling systems Security monitoring systems Appliances Lights Automobiles Antilock brakes Engine control modules Airbag controller Cruise control Process Controllers and Robotics Remote monitoring systems Power monitors Machine controllers Medical devices Computer Devices and Office Machines Keyboards Printers Faxes Copiers
Examples of Computer Applications in Society p Figs. 1-36–1-43 Education Finance Government Healthcare Science Publishing Travel Industry
Chapter 1 Complete