Question

Explain Accumulator.

Explain the following register in 8085 Micro-processor:

Accumulator

Answer 1

1. The accumulator is the 8085's 8-bit primary register that performs arithmetic and logical operations. In such operations, one of the operands is always held in the accumulator.
2. It can function as both a primary source and destination register. The final result of the operation is also stored in the accumulator.
3. All data transfers between the CPU and I/O devices go through the accumulator.
4. Many memory reference instructions move data from the accumulator to memory.