Question

What is the difference between registers and RAM?

Answer 1

Electronically, registers and ram are both memory, but that's where their resemblance stops.

Some of the main differences between them are:

A register is an integral part of a CPU's structure; ram is external to the CPU

A CPU doesn't require a data bus or an address bus to access registers, but it needs both to access ram.

Registers are used to manipulate data, ram is used to store it.