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INFORMATION TECHNOLOGY

INFORMATION TECHNOLOGY . COMPUTER HARDWARE. 6 elements of communication computer system. Human being Hardware Software Data / information Procedure Communication. What is hardware?.

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INFORMATION TECHNOLOGY

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  1. INFORMATION TECHNOLOGY COMPUTER HARDWARE

  2. 6 elements of communication computer system • Human being • Hardware • Software • Data / information • Procedure • Communication

  3. What is hardware? • Hardware is best described as a device that is physically connected to your computer or something that can be physically touched. A CD-ROM, monitor, and printer are all examples of computer hardware.

  4. Without any hardware your computer would not exist and software would have nothing to run on.

  5. 5 main function of hardware • Input • Processing • Output • Storage • Communication

  6. TYPES OF HARDWARE INPUT OUTPUT

  7. Input Device • Input device is a tool to interpret the symbol that understand by human being to the symbol that computer understand to process. • Device for entering information into a computer.

  8. INPUT DEVICE Direct entry Keyboard entry

  9. Function key Keyboard Entry Numeric key Escape key Data will be input into the computer using the keyboard Windows key Cursor key Space bar key

  10. Direct Entry Device • This device is to create data that can be read by machine and direct enter to the CPU. • Direct entry device is divide to • pointing, • scanner and • voice input device

  11. Direct entry device • Pointing Devices • Mouse • Trackball • Touch screen • Digital camera

  12. Example: Digitizer Joystick Game Controller Gamepad Direct entry device

  13. Direct entry device • Scanner Devices • Scan text, image, drawing or special symbol • Images are recorded in digital form.

  14. Image scanner Bar code reader Fax machine Character recognition Scanner

  15. Voice Input Device • This device is change the human voice into digital code. • Example : • microphone

  16. OUTPUT DEVICE • Output device is a tool to interpret the code that understand by computer to the symbol or language that understand by human being. • Device for appearing an information from computer.

  17. Output Device • Output Devices are divided by 4 : • Monitor • Printer • Plotter • Voice output device

  18. Types of monitor CRT – cathode ray tube LCD – Liquid crystal display monitor

  19. Printer is a tools for transferring information onto paper, that is truly external to the other functions of the computer. Printer

  20. Printer • 4 types of printer : • Ink jet • Dote matrix • Thermal • Laser jet

  21. Plotter is a special device to create chart, map, 3D illustration and architectural drawing Plotter is divide by 4 : Pen plotter Electrostatic plotter Ink jet plotter Direct image plotter Plotter

  22. This device is function to outward the sound. Voice Output Device

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