Explain how CPU registers may be used to carry out basic addition.

Here's how CPU registers are used for basic addition:

• Step 1: Fetching Operands The CPU fetches the first number from memory and stores it in a register (e.g., Register A). It then fetches the second number and stores it in another register (e.g., Register B).

• Step 2: Performing Addition The Arithmetic Logic Unit (ALU), a part of the CPU, takes the numbers from Register A and Register B, performs the addition operation, and produces the sum.

• Step 3: Storing the Result The sum calculated by the ALU is then stored in a third register (e.g., Register C) or back into one of the operand registers, overwriting its previous content. This result can then be written back to main memory if needed.