The CPU

(In red are the things i forgot)

The cpu function is to process all data and instructions that make the system work. Its processing power depends on: clock speed, cache size , number of cores .

3 main parts of the CPU

. Control Unit - controls the CPU , manages the fetching, decoding and exiting of program instructions

.Arithmetic unit- manges everything to do with calculations

.The cache- holds frequently used data that can be quickly given when the CPU needs it. When the CPU requests data, it first checks cache, if its not there it will then check RAM.

.Cache memory has 3 levels, 1st is quickest but has the least storage… yk the rest

.Caches have low capacity and are inexpensive compared to RAM and secondary storage