A CPU has several different types of registers, containing information about the instruction set and data that must be executed. ____________ are used to hold variables and temporary results as the ALU works through its execution steps. The general registers are like the ALU’s scratch pad, which it uses while working. _________ hold information such as the program counter, stack pointer, and program status word (PSW).

A.
General registers, special registers

B.
ALU, PSW

C.
Cache, general registers

D.
PSW, special registers

Explanation:
A CPU has several different types of registers, containing information
about the instruction set and data that must be executed. General registers are used
to hold variables and temporary results as the ALU works through its execution
steps. The general registers are like the ALU’s scratch pad, which it uses while
working. Special registers (dedicated registers) hold information such as the
program counter, stack pointer, and program status word (PSW).