The document discusses the main hardware components of a computer system. It is divided into three main parts: input devices, the system unit, and output devices. The system unit contains the motherboard, CPU, storage memory like RAM and hard disk, network cards, and video graphics adapter. Common input devices include keyboards and mice, and output devices include monitors and printers. The document also discusses data storage, backup, antivirus software, and some basic troubleshooting for data loss issues.

1. Computer components
Submitted to: Mam Anam
Submitted by: Abdul Hanan Wadood (15-NTU-1326)
Shoaib Ameen (15-NTU-1347)

2. Two Main Parts Of computers…..
computer
SoftwareHardware

3. HARDWARE
Hardware is divided to the following parts…..
Hardware
Input
devices
System
unit
Output
devices

4. Input Devices
Devices that feed data into the system unit are called Input Devices
INPUT
System unit

6. System Unit

7. MOTHERBOARD
It is the biggest electronic boar in the
system units.
It join all the computer items together
.(keyboard, Mouse, Monitor, cpu )

9. Cpu (central processing unit)
The central processing unit compared as the brain of the human.
The cpu is attached to the motherboard.
It is cooled by a fan in the computer case because it warms up quickly
because many processes running.
The speed of cpu is measured in GHZ.

11. Storage Memory
computer system contains different kinds of memories to store/save documents we
prepared
2 types of memories are:
Ram (random access memory): information is stored in ram during
its entry and formatting. It is emptied once the computer is turned off.
Hard disk: information is stored/saved here even the computer is turned off.
Capacity of hard disk is measured in GB. It is slower than the RAM.
When we perform the file-save command, the information goes from RAM to hard
Disk.

12. RAM
HARD DISK

13. ROM ( read only memory)
It is the memory where all the instructions related to the hardware
functioning are stored.
We cannot change the information stored in the ROM.

14. ROM ON MOTHERBOARD

15. NETWORK CARD
It enables us to connect to the internet….
Our computer can work without the modem by which we connect to
the internet….

16. ETHERNET WIRE (for internet)

17. MODEM PORT IN CPU

18. NETWORK CARD (MODEM SLOT )

19. NETWORK CARD (WIRELESS)

20. THE VGA (video graphics adapter)
Its an interface between system and the monitor.
It’s a standard for displaying text, graphics and colors on the screen.

21. SLOTS OF CPU

22. Output Devices
Any device that send data/information from
system unit to another device….
Output
Device

24. PRINTER
Printer are used to create a hard copy of output from the computer system
(normally on paper)
3 TYPES OF PRINTERS ARER:
DOT MATRIX PRINTER
INKJET PRINTER
LASERJET PRINTER

25. IPO SYSTEM (WORKING OF COMPUTER)
Data is INPUT into the computer system
It is then PROCESSED to produce useful information as OUTPUT
INPUT PROCESSING OUTPUT

26. DATA LOSS
data loss can occur because of the following reasons:
HARDWARE PROBLEM: my computer is subjected to any
hardware problem at any time. We may lose data if my hard disk is not
working properly. If any other part is not working properly its ok our data is
safe.
VIRUS PROBLEM: the main sources of virus are internet and
Email. Other sources can be USB, CD or pirated software.

27. How can I keep my data safe??
Create a backup of your files.
Install an antivirus program and keep it up to date on regular basis.

28. Back Up Operation
Saving my files/data in a USB/DVD every time
I create a new data file is called creating back up…

29. Oh My God I lost my files…..
What should I do nowww….

30. I have my back up

31. Yesss….   

32. ANTI VIRUS PROGRAMS

34. Any Question…..

35. Lets test our knowledge……
Which printer is economical???
Where do I sue touch screen???
The computer cannot work without a printer???
The biggest item in system unit is MOTHERBOARD???
Name 3 types of printer….
Command for print is???

36. Thank you