Computer componentsSubmitted to: Mam AnamSubmitted by: Abdul Hanan Wadood (15-NTU-1326) Shoaib Ameen (15-NTU-1347)

Two Main Parts Of computers…..

computer

Software

Hardware

HARDWAREHardware is divided to the following parts…..

Hardware Input

devices

System

unit

Output

devices

Input Devices Devices that feed data into the system unit are called

Input Devices

INPUT

System unit

System Unit

MOTHERBOARD

It is the biggest electronic boar in the system units.

It join all the computer items together .(keyboard, Mouse, Monitor, cpu )

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.

Storage Memorycomputer 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.

RAM

HARD DISK

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.

ROM ON MOTHERBOARD

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

we connect to the internet….

ETHERNET WIRE (for internet)

MODEM PORT IN CPU

NETWORK CARD (MODEM SLOT )

NETWORK CARD (WIRELESS)

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.

SLOTS OF CPU

Output Devices

Any device that send data/information from system unit to another device….Output

Device

PRINTERPrinter are used to create a hard copy of output from the

computer system (normally on paper) 3 TYPES OF PRINTERS ARER:DOT MATRIX PRINTERINKJET PRINTERLASERJET PRINTER

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

OUTPUTINPUT PROCESSI

NG OUTPUT

DATA LOSSdata 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.

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.

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

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

I have my back up

Yesss….

ANTI VIRUS PROGRAMS

Any Question…..

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???

Thank you