Give list of basic computer register with their size

1. Accumulator Register (AC): The size of this register is usually the word size of the computer - for example, a 32-bit computer would have a 32-bit accumulator.

2. Data Register (DR): The size of this register is also typically the word size of the computer.

3. Address Register (AR): The size of this register is determined by the maximum addressable memory. For example, a computer with a 32-bit address bus would have a 32-bit address register.

4. Program Counter (PC): The size of this register is determined by the maximum addressable memory. It is typically the same size as the address register.

5. Instruction Register (IR): The size of this register is determined by the size of the machine instructions. This can vary depending on the computer architecture.

6. Memory Buffer Register (MBR): The size of this register is typically the word size of the computer.

7. Memory Data Register (MDR): The size of this register is typically the word size of the computer.

8. Index Register (IX): The size of this register is typically the word size of the computer.

9. Stack Pointer (SP): The size of this register is determined by the maximum addressable memory. It is typically the same size as the address register.

10. Base Register (BR): The size of this register is determined by the maximum addressable memory. It is typically the same size as the address register.

Please note that the sizes of these registers can vary depending on the specific computer architecture and design.