Question

The highest order register of register pair PSW is ______ registor.

Options

• A

• H

• Flag

• SP

Answer 1

The highest order register of register pair PSW is A registor.

Explanation:

The Program Status Word (PSW) is a 16-bit unit consisting of the Accumulator (A) and the Flag register. In this pair, the Accumulator holds the most significant 8 bits (high-order), while the Flag register holds the least significant 8 bits (low-order).