Flashcards
computing
Flashcards do conjunto (29)
- 1what do computers have at their coresa core processor
- 2where do computers store thingsthe memory
- 3what do they use to move things aroundbuses
- 4what do computers use communicate with external devicesinterfaces
- 5what does computer architecture mean?the structure of the computer
- 6what is hard ware? what is a device?are all the physical parts of the computer system
is a single piece of hardware - 7the structure of a computer system contains what?input devices- mouse
processor
storage devices- hard drive
memory-RAM and ROM
output devices-monitor - 8what is ROM?Read only memory
- 9what is RAM?random access memory
- 10what is the difference between RAM and ROMRAM doesn't store things when computer is off but ROM does
- 11what does the processor do?the processor does all the sorting, calculating and decision making goes on
- 12what is software?software is the name given to a set of intsructions for the computer
- 13what must the memory do for the processor?it must be supplied with instructions from the memory, one at a time and in the correct order
- 14what happens when you change the program on a computer?it allows the computer to carry out a totally new task
- 15name the parts of a processorcontrol unit
arithmetic and logic unit
registers - 16what does the control unit do?it controls all other parts of the processor to make sure that the program instructions of the computer are carried out in the correct order
- 17what is the job of the arithmetic and logic unit?it is to carry out the arithmetic operations such as add (+), times (*), subtract (-) and divide (/). it also makes logical decisions such as AND, OR and NOT
- 18where are things stored?the memory
- 19what is the memory made of?a collection of chips
- 20each time data is stored in the memory what happens to it?it is stored in he memory in a storage location at a specific adress
- 21what two kinds of chips do you get in the memoryRAM and ROM
- 22what are differences between RAM and ROM?RAM holds data and programs which are loaded from backing storage while ROM stores programs and data permanently even when the computer is off.
RAM stores programs and data temporarily, only when their is power - 23why do you need plenty of RAM?extra RAM improves performance
it also allows the computer to have larger programs loaded into RAM at one time
it is faster to process files held in RAM - 24what kinds of buses do you get?Address
DATA
Control - 25what does a data bus do?it is used to specify which memory location is to be used to read data from or write data to
- 26what does a data bus dois used to carry data from a memory location to the processor and vise versa
- 27what does a control bus do?it is used to send out signals to initiate events such as reading an item of data from a memory location into the processor or writing an item of data from
- 28what does an interface provideit provides a link between a peripheral and the CPU which allows them to communicate
- 29which is slower the processor or peripheral devicesthe peripheral is the slower one. the interface has to compensate for differences in speed e.g. slow printer fast processor .
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- national 5 computing science FlashCards sobre computing, criado por Daniel McLaren em 02-02-2015.
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- Daniel McLaren
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