Flashcards
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Cards in this deck (16)
- 1what is the purpose of the CPU ?carries out all the processing for the computer system by executing
the instructions given to it - 2what is an embedded system ?an embedded system is a computer system built into a larger devices
- 3what is the purpose of an embedded system ?embedded systems are usually dedicated to single task or small range of specific task
- 4what is the purpose of a computer system ?a computer system's purpose is to take data, process it and then output it
- 5what does a computer system consist of ?computer systems consist of hardware, physical components which makes up a computer
- 6what should all computer systems include ?all computer systems must include a CPU and at least one input device to get data from the real world
- 7what is magnetic storage used for ?magnetic storage is used for secondary storage within computers (hard disk drive)or to provide supplementary storage where high capacity is required (external hard disk)
- 8what is optical storage used for ?optical storage is used for software, game and video distribution
- 9what is solid state storage used for ?solid state storage is used for secondary storage in portable devices such as tablets, cameras, mobile phones and increasingly in laptops
often referred to as flash memory - 10what are the advantages of upgrading RAM ?when a computer is running several applications at the same time, the RAM often becomes full
adding more RAM to a computer means more applications can be run at the same time - 11what does an accumulator store ?an accumulator stores results from calculations
- 12what does a PC store ?a PC stores the memory address of the next instruction to be fetched
- 13what does MDR ( memory data register) store ?MDR stores the data that is being transferred from memory
- 14what does MAR (memory address register) store ?MAR stores the memory address of data that is currently being fetched
- 15what is volatile ?Loses data when there is
no power. - 16what is non volatile ?Retains data even
when the power is turned off.
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- Flashcards on Untitled, created by Faizan Zirrat on 28/02/2020.
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- Faizan Zirrat
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