1. Mrs. Staniec

2. 1. Identify different types of computer devices. 2. Identify the role of the central processing unit. 3. Identify the difference between an operating system and application software.

4. 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.  A computer originally meant a mathematician.  Gradually developed into machines.  The 1 st computer in the computing world is known as ENIAC (Electronic Numerical Integrator and Calculator). ENIAC

6.  Computers have three main components: 1. Hardware 2. Operating System 3. Applications COMPUTERS

7. Speake r Mouse Keyboard Monitor Tower Case The physical components of a computer system.

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

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

10.  Three stage process: 1. Input 2. Processing 3. Output

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

12.  Minicomputers  Older  Like small mainframes

13.  Microcomputers  Originally for single user  Called PCs  Desktop systems  Portable systems

14.  Handheld Computing Devices  Smartphone  GPS  Apple iPod  E-Book Reader

15.  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 to the Internet  Single computing device or LAN (Local Area Network)  Use routers to connect

17.  Sharing resources  Storage  Printers  Scanners  Applications

18.  Complete Chapter 1 Review Questions