Edexcel GCSE Computer Science

4.2.2: understand the function of different types of main memory (RAM, ROM, cache)

Keywords:
Computers
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KeywordDefinition
Cachesmall amount of very fast memory that sits between the CPU and main memory to store frequently accessed data and instructions
Non volatilea type of storage where the data is stored safely even when the power is turned off
Random Access MemoryVolatile storage, used to store instructions and data whilst a program is running. Otherwise known as main memory
Read Only MemorySmall amount of non volatile storage, used to store instructions and data tell the computer what to do when it first switches on.
Volatilea type of storage where the data is lost when the power is turned off
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