The document discusses computer hardware components, including both internal and external hardware. It describes input devices like keyboards and mice, as well as output devices like monitors and printers. It discusses the system unit and its internal components such as the motherboard, power supply, CPU and storage devices. The CPU contains a control unit and ALU. Secondary storage devices are described, including hard disks, optical disks, magnetic tape and flash memory.

1. Hardware
Students:
Mahmood Mthafer
Muhammad Hamid
Farman Fazil

2. Computer Hardware
 Internal Hardware (Components)
 External Hardware (Peripherals)

3. Computer Hardware
Contents:
 Computer Hardware
o Input Devices
o Output Devices
o System Unit
o Storage Devices
o Communication Devices

4. Computer Hardware
The External Component of the
Computer
 Input Devices
o Any peripheral used to input data into the computer
• Keyboard
• Mouse
• Scanners
• Monitor
• Joystick

5. Computer Hardware
 Output Devices
o Any piece of computer hardware equipment used to
communicate the results of a data from data processing
activity
• Monitors
• LCD projector
• Printers

6. Computer Hardware
 Storage devices
 This are devices that are use to keep information for
future use
 They may be internal (e.g. hard disk RAM and ROM ,
etc.) or external (e.g. flash drive ,flash memory , etc. )

7. Computer Hardware
Primary Storage
• Main Memory or Internal Memory
• Directly accessible to the CPU
• RAM

8. Computer Hardware
Secondary Storage
 External Memory or Auxiliary Storage
 Not directly accessible to the CPU
 I/O Channel is used to access the
Secondary Storage

9. Computer Hardware
Secondary Storage
 Floppy Disks
 Hard Disks
 Optical Disks
 Magnetic Tape
 Flash Memory
 Flash Drive

10. Computer Hardware
System Unit
 The system unit houses
o The motherboard
o The power supply
o Storage Devices
o Other Devices

11. Computer Hardware
Internal Components Of The System
Unit

12. Computer Hardware
The Motherboard
 Main Circuit Board in the computer that
contain ports for
• Keyboard , mouse and printers
 Installed Processor and memory chip
 Expansion slots for additional circuit
boards – video sound and communication
modem

13. Computer Hardware
The Motherboard

14. Computer Hardware
The Power Supply Unit
 A device that
converts AC to DC

15. Computer Hardware
Central Processing Unit
(CPU)
 CPU is the brain of the computer –
Follows instruction of software to
manipulate data into information
o The Control Unit
o Arithmetic /Logic Unit(ALU)

16. Computer Hardware
Part Operation of the CPU
 Control Unit :Decodes instruction stored in the
CPU and carries the instruction
 ALU :Performs Arithmetic and Logical
Operations in the CPU
 Registers: Temporarily stores data during
processing by the CPU
 Buses: Electrical data roadways in which data
travels

17. Computer Hardware
 Behind The System Unit Ports and Connectors –
Dedicated Ports

18. Computer Hardware
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