The physical electrical components of a computer system.(Motherboard, Printer)
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Software
Sequence of instructions that execute on a computers hardware to perform a specific task (database, word processing etc.)
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Input device
Provides data into the computer (e.g Mouse, keyboard, webcam etc)
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Output device
Used to present data from a computer (e.g Monitor (VDU), Printer etc)
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Internal component
Electrical and physical components within the computer itself (E.g RAM stick, motherboard etc.)
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External components
Components 'plugged' into the computer. (E.g External HDD, USB stick etc.)
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Peripheral device
A device not directly connected to the CPU
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Three box model
Proccessor, Main memory, input-output devices. All connected by a 'bus'
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Central Processing Unit (CPU)
Shortened to processor, the 'brains' of a computer which performs tasks and management.
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Main memory (RAM) (Random Access Memory)
Instructions and data are held here while the computer is running. 'Ordinary memory' lost when switched off.
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ROM (Read Only Memory)
Non volatile, info permanently etched. Like 'RAM but read only'. Used with 'bootstrap loader' containing loading instructions for the operating software
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Auxiliary Storage
Devices used for long term storage of data. E.g. Compact discs, Hard disk drives, flash memory drives & DAT storage devices.
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Application software
Non volitile, Used to perform tasks that are independent of the computer (real world tasks, user orientates tasks.)
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System software
Software that performs tasks to run on the computers hardware. (Machine orientated tasks)
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Operating systems (The virtual Machines)
Designed to hide the complexities of the hardware from the user
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Scheduling
An order of processes that are run completely, one after another by a processor.
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Time slicing
The allocation of small amounts of processing time to each process by the processor, giving the appearance of multi-tasking.
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Other cards in this set
Card 2
Front
Software
Back
Sequence of instructions that execute on a computers hardware to perform a specific task (database, word processing etc.)
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