The CPU stores its computations in some internal systems referred to as “registers”. They function as a temporary space for the CPU to store data. It is efficient, yet with very limited storage space.
The CPU has different registers in which several tasks and data are stored. For example, there are registers that hold addresses, others that hold numbers, computations, etc.
After the information moves from the registers, they move to another temporary storage known as “caches”. Caches differ from registers in that they can be used to hold different data, unlike registers that only hold specific data.