Extract the answer to the question from the following context.
Question: What is the computer memory a part of?
Context: A general purpose computer has four main components: the arithmetic logic unit (ALU), the control unit, the memory, and the input and output devices (collectively termed I/O). These parts are interconnected by buses, often made of groups of wires.
main components
The memory is one of the main components, so it's a part of them..