Download - Computer components
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Computer componentsSubmitted to: Mam AnamSubmitted by: Abdul Hanan Wadood (15-NTU-1326) Shoaib Ameen (15-NTU-1347)
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Two Main Parts Of computers…..
computer
Software
Hardware
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HARDWAREHardware is divided to the following parts…..
Hardware Input
devices
System
unit
Output
devices
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Input Devices Devices that feed data into the system unit are called
Input Devices
INPUT
System unit
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System Unit
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MOTHERBOARD
It is the biggest electronic boar in the system units.
It join all the computer items together .(keyboard, Mouse, Monitor, cpu )
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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.
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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.
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RAM
HARD DISK
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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.
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ROM ON MOTHERBOARD
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NETWORK CARD It enables us to connect to the internet….Our computer can work without the modem by which
we connect to the internet….
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ETHERNET WIRE (for internet)
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MODEM PORT IN CPU
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NETWORK CARD (MODEM SLOT )
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NETWORK CARD (WIRELESS)
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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.
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SLOTS OF CPU
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Output Devices
Any device that send data/information from system unit to another device….Output
Device
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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
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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
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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.
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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.
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Back Up OperationSaving my files/data in a USB/DVD every time I create a new data file is called creating back up…
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Oh My God I lost my files…..What should I do nowww….
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I have my back up
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Yesss….
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ANTI VIRUS PROGRAMS
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Any Question…..
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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???
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Thank you