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. INPUT
TYPES OF HARDWARE
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
Keyboard entry
Direct entry

9. Keyboard Entry Function key 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. Direct entry device Example: Digitizer Joystick Game Controller
Gamepad

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

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

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

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

21. Plotter
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

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