3. Register

A register is a discrete memory location within the CPU designed to hold temporary data and instructions.

registers in a cpu

A modern CPU will hold a number of registers. There are a number of general purpose registers that the programmer can use to hold intermediate results whilst working through a calculation or algorithm.

Then there are special-purpose registers designed to carry out a specific role.

Each of these registers are given a name so that the programmer can write their software code to access them. Different manufacturers of CPU chips call them by different names (which makes life interesting for a professional programmer!)

Challenge see if you can find out one extra fact on this topic that we haven't already told you

Click on this link: What are memory registers