Computer systems 0.0 / 5 ? ComputingComputer systemsGCSEOCR Created by: xo_chloe_smithCreated on: 02-03-20 13:24 Define a computer A computer is a machine that processes data 1 of 10 Define an Embedded System Embedded systems are computers inside a larger system 2 of 10 What does the CPU do? THe CPU processes all of the data and instructions that make the system work 3 of 10 What is the ALU and what does it do? The ALU is the arithmetic logic unit. The ALU basically does all the calculations 4 of 10 What is the Cache and what does it do? The cache is very fast memory in the CPU, it stores regularly used data so the CPU can access it quickly 5 of 10 What is RAM and what is it used for? RAM is high speed, volatile memory - it is the main memory in a computer and it can be read AND written to 6 of 10 what is ROM and what is it used for? ROM is non-volatile memory - it can only be read, not written to. it contains all the instructions a computer needs to properly boot up 7 of 10 What is virtual memory and what is it used for? Virtual memory is secondary storage used as extra RAM 8 of 10 What does Compression software do? Compression software reduces the size of files so they take up less disk space. 9 of 10 What does Encryption software do? Encryption software scrambles data to stop third-parties from accessing it. 10 of 10
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