Flashcards

CPU flashcards

cameronneasom11 Computer Science GCSE English 7 cards

Cards in this deck (7)

1What does CPU stand for?Central Processing Unit.
2What is the purpose of the CPU?To fetch, decode and execute instructions from the memory. It is essentially the "brains" of the computer.
3What does ALU stand for?Arithmetic and Logic Unit.
4What controls the speed at which a CPU can process data and carry out instructions?CPU clock speed, cache memory and the number of processor cores all affect the speed in some way.
5What is included in the hardware of a computer?Input, output, processing and storage devices.
6What is clock speed and what is it measured in?Clock speed is the speed of the
fetch-execute cycle, determined by the electronic clock chip - it is measured in cycles per second or hertz (Hz). Typically, they are measured in gigahertz (GHz), billions of cycles per second.
7What is the purpose of cache memory?Cache memory is located closer to the CPU than main memory, so it can be accessed faster. It is very expensive but better to use to store instructions currently in use for processing tasks.