The document discusses the basic components of a computer system, including hardware and software. It describes the four main hardware components that handle data: input devices, the central processing unit (CPU), output devices, and storage. Input devices like keyboards and mice take in data. The CPU processes and transforms data into information. Output devices like monitors and printers display processed information. Storage, such as hard disks, securely holds data and programs. The software directs the hardware's functions and allows users to access the computer's capabilities.

1. Computers Tools for an information Age Chapter 1 B.M.H PC assemble procedure

2. Review A computer is a device that 1) accepts ( ) 2) ( ) data, 3) ( ) data, 4) and produces ( ) MIU

3. Learning Objectives Computer System ’ s Basic Components Hardware Network Internet MIU

4. What is a computer? In von Neumann ’ s paper Computer : a device that 1) accepts input, 2) processes data, 3) stores data, 4) and produces output. MIU output device Input device memory device Control, Operating device

5. Computer System The procedure from input to output Is directed by the software performed by the hardware MIU Processing Data Information Storage Input Output

6. Computer System Hardware The equipment associated with a computer system Software A set of instructions Which tells the hardware what to do Referred to as programs People Use the power of the computer MIU

7. What is the Hardware? The physical components of the computer The pieces we can pick up and touch MIU

8. Hardware The hardware of four aspects of computer system MIU Processor (CPU) input output storage Input device Output device Secondary storage Processing Memory

9. Hardware To function, computer system ; Four main aspects of data handling : Input Processing Output Storage The hardware is responsible for these four areas Input device Process or (CPU: Central Processing Unit) Output device Storage (secondary storage) MIU

10. Your PC Hardware Input Devices Process & Memory Output Devices Secondary Storage

11. Input devices accept data or commands in a form that the computer can use send the data or commands to the processing unit Some common ways of input to the system Typing : keyboard Pointing : mouse Scanning : wand reader, bar code reader, scanner MIU

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14. MIU Flatbed scanner Sheetfed scanner handheld scanner

15. Processor : Central Processing Unit (CPU) Consists of electronic circuits that interpret and execute program instructions. Communicates with the input, output and storage devices. Actually transforms data into information MIU

16. Processor MIU AGP bus bus PIN PIN Microprocessor

17. MIU Industry Standard Architecture (ISA) bus Is used for slow-speed devices such as the mouse and modem Peripheral Component Interconnect (PCI) bus A high-speed bus used to connect devices such as hard disks and network cards Accelerated Graphics Port (AGP) Designed to provide a dedicated connection between memory and an AGP graphics card Processor

18. MIU Intel Pentium IV Processor AMD Processor

19. Memory Known as primary storage . Holds the data only temporarily. Holds the programs (computer instructions) needed by the CPU. RAM (Random Access Memory) ROM (Read Only Memory) MIU

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22. Output devices Show people the processed data(information) in understandable and usable form The most common ones : monitor, printer MIU

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24. MIU Inkjet Printer Laser Printer Dot-matrix Printer

25. Storage Usually secondary storage . Can store data and programs outside of the computer itself. MIU

26. Secondary Storage Magnetic disk Diskette, hard disks Disk drives : devices to read disk data Optical disk CD-ROMs and DVD-ROMs Uses a laser beam to read large volumes of data relatively inexpensively Magnetic tape (for backup purpose) reel tape, cartridge tape Tape drives MIU

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32. Complete HW System Peripheral Equipment The hardware devices that are attached to the computer Includes all input, output and secondary storage device MIU

33. Peripheral Equipment In most computer The CPU and disk drives : in the same housing, a metal case The keyboard, mouse, and monitor : separate In larger computer system The input, processing, output, and storage functions May be separate rooms, separate buildings, or even separate countries MIU

34. Network Internet

35. Network A system that uses communications equipment to connect computers and their resources Resources : printers, hard disks, software and data A collection of computers and other devices that communicate to share data, HW, and SW. Types Local Area Network (LAN) : in a building or campus Wide Area Network (WAN) : across the country MIU

36. Internet Called simply “ the Net ” Inter (among) + Network Small networks : a few computer within a building Larger networks : connections across the country Internet : the world ’ s largest computer network connections for millions of computers all over the globe. Connects users to the worldwide Provides many information services MIU

37. What to do through the Internet? Gathering Information Searching for the information Downloading a Free Trial Program Reading the News on the Internet Internet Shopping Playing the Music, Videos Chatting with other people in real time Sending and receiving electronic mail MIU