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Guide to Identifying Computers

Guide to Identifying Computers . Mrs. Staniec. Objectives:. Identify different types of computer devices. Identify the role of the central processing unit. Identify the difference between an operating system and application software. . Computers are EVERYWHERE !. What is a COMPUTER?.

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Guide to Identifying Computers

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  1. Guide to IdentifyingComputers Mrs. Staniec

  2. Objectives: • Identify different types of computer devices. • Identify the role of the central processing unit. • Identify the difference between an operating system and application software.

  3. Computers are EVERYWHERE!

  4. What is a COMPUTER? An electronic device, operating under the control of instructions stored in its own memory unit, that can accept data (input), manipulate the data according to specified rules (process), produce information (output) from the processing, and store the results for future use.

  5. Brief History of Computers • A computer originally meant a mathematician. • Gradually developed into machines. • The 1st computer in the computing world is known as ENIAC (Electronic Numerical Integrator and Calculator). ENIAC

  6. Computer Anatomy • Computers have three main components: COMPUTERS

  7. Hardware • The physical components of a computer system. Monitor Speaker Mouse Keyboard Tower Case

  8. Operating System • Program that controls the computer, enabling the hardware and application software to work together. • For example, Windows 7, Mac OS X, etc.

  9. Applications • Set of instructions that performs tasks and extends the functions of the computer. • Also known as a program or software.

  10. How Computers Work • Three stage process: • Input • Processing • Output

  11. Categories of Computers • Mainframes (1940s - 1970s) • Big • Powerful • Support many users • Supercomputers • Large mainframe • Hundreds of CPUs • Single task focus • For example, tallying census results

  12. Categories of Computers • Minicomputers • Older • Like small mainframes

  13. Categories of Computers • Microcomputers • Originally for single user • Called PCs • Desktop systems • Portable systems

  14. Categories of Computers • Handheld Computing Devices • Smartphone • GPS • Apple iPod • E-Book Reader

  15. Connecting Computer Systems • Microcomputers • Decentralized processing • Flexible storage • Decentralized • Centralized on server • Sharing of resources through networks • LAN (Local Area Network) • WAN (Wide Area Network) • Wireless (WiFi)

  16. Connecting Computer Systems • Connecting to the Internet • Single computing device or LAN (Local Area Network) • Use routers to connect

  17. Microcomputer Networks • Sharing resources • Storage • Printers • Scanners • Applications

  18. In-class Activity • Complete Chapter 1 Review Questions

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