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Computing (Components in a ting (Cooling fan, Hard disk drive, RAM, Mother…
Computing
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CPU
Three main parts
ALU - Does calculations - Also does logic operations such as AND, OR and NOT, also has the accumulator register.
Cache - Fast memory - stores regularly used data so don't need to go RAM every time - Cache has low capacity and expensive compared to the RAM
Control unit - Executes instructions after FDE cycle - Controls flow of data inside and outside the CPU.
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Secondary storage
Magnetic hard disks are high capacity, reliable storage - traditional internal storage
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Performance
CPU performance depends on clock speed, cores and cache
Number of cores - each core can process data independently - more cores, more instructions can be carried out
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Clock speed is number of instructions a single core can do a second - come CPU's can be overclocked so they run quicker however can cause overheat
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