ICT - Types/Components of Computer Systems
About this set
Created by:
crystelclear1104 on April 3, 2012
Subjects:
ict, information and communication technology, igcse, computers, computer systems
Description:
chapter one of the IGCSE Information and Communication Technology textbook.
Classes:
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16 terms
Terms | Definitions |
|---|---|
 Hardware | physical components that make up a computer system |
| systems software | programs that allow hardware to run properly |
| applications software | programs that allow the user to go specific tasks |
| CPU | - interprets and executes commands from computer hardware and software - discrete components - numerous small integrated circuits |
| microprocessor | single integrated circuit |
| internal hard drive | - where applications software, disk OP and data files are stored - fast data transfer/access times - large data storage capacity |
| RAM (random access memory) | - internal chip - data is temporarily stored here while running applications - lost when computer is powered off |
| ROM (read only memory) | - stores permanent information - cannot be altered - not lost when computer is powered off |
| Operating Systems | enable users to communicate with computer systems |
| Command Line Interfaces | user must learn number of commands to perform operations |
| Graphical User Interfaces | user interacts with computer using icons |
| Desktop computer | separate monitor, keyboard, processing unit and mouse |
| Laptop | monitor, keyboard, processing unit and mouse all in one unit |
| Netbook | handheld version of laptop |
| PDAs | handheld computer with touch screen activated by stylus |
| Mainframe computers | large and extremely powerful computer system |
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