Cache memory refers to a fast storage buffer in the central processing unit (CPU) of a computer, allowing the computer to store data temporarily, making information retrieval faster and more efficient. By storing often-used data in a special memory chip rather than accessing the memory of the computer for the same information each time, cache memory helps maximize the efficiency of the CPU.

Typically, in order to execute a command, the processor in a computer places a numeric address for the instruction it is about to execute on the address bus. Once the memory subsystem senses the address, it deposits the code representing that instruction onto the data bus. The processor then collects this code from the data bus, interpreting it as a command of some sort. The execution of this instruction may involve several operations similar to the one that enabled the processor...