ICT

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  • Created by: m.khan
  • Created on: 16-05-17 19:54
Hardware
Physical devices that make up a computer system
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Software
Computer programs/things you cannot touch
2 of 27
Personal computer
-Desktop computer -Very powerful -Not portable
3 of 27
Laptop
-Portable -Run on batteries -Can be expensive
4 of 27
Netbook
-Smaller than a laptop -Less powerful -Less storage
5 of 27
PDA
-Handheld computer -Least powerful -Replaced by smartphones
6 of 27
Processor
-Brain of the computer -Processes raw data into information
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Motherboard
Central circuit of the computer. All the other hardware connects to it.
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Sound card
Outputs sound out of a speaker
9 of 27
Graphics card
Hardware. Processes the images that are output to the monitor.
10 of 27
Optical drive
CD/DVD drive
11 of 27
Hard drive
A backing storage device
12 of 27
Input
The act of entering data into an ICT system
13 of 27
Input device
The hardware device used to enter the data.
14 of 27
OCR
Optical Character Reader -Scans documents and recognises the letters and numbers -Faster than typing on a keyboard -Handwriting maight be difficult to read
15 of 27
OMR
Optical Mark Reader -scans documents and looks for marks or crosses -Faster than typing in with a keyboard -Takes time to set up -Used on lottery tickets,exams
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Barcode Reader
Uses light to read the bars printed to get the ID number -Faster than typing in with a keyboard -limited uses
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Biometrics
Inputting security features using human biology
18 of 27
Primary storage
The memory that the computer uses to store data it needs to run
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RAM
Random access memory -Volatile -fast temporary memory
20 of 27
ROM
Read Only Memory -Non-Volatile -fast permantant memory
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Magnetic hard drive disk
Most comman way of storing data. +very high transfer rate +Very high storage capacity -Moving parts,so can break easily
22 of 27
Magnetic tape
Data stored magnetically on a cassette tape +cheap +can add more tape -slow transfer rate
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USB memory stick
Portable +Cheap & lightweight +reliable -easily lost -smaller capacity
24 of 27
Memory card
small card for storing data +no moving parts -slow transfer rate
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CD/DVD drive
reads disks that have been burnt onto them +Cheapest -Low capacity
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Peer to peer network
2 or more computers linked together to share resources -
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Other cards in this set

Card 2

Front

Software

Back

Computer programs/things you cannot touch

Card 3

Front

Personal computer

Back

Preview of the front of card 3

Card 4

Front

Laptop

Back

Preview of the front of card 4

Card 5

Front

Netbook

Back

Preview of the front of card 5
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