Question

5. Which of the following is not a special function register?
a) Program counter
b) Instruction pointer
c) Accumulator
d) Stack pointer​

Answer 1

Answer:

c) accumulator is not special function register

Answer 2

Answer:

c) Accumulator is not a special function register.

Explanation:

• Accumulator is a general function register, which can be used for multiple functions.
• The programme counter (PC) is a register that keeps track of the memory address of the next instruction.
• A Special Function Register (SFR) is a microprocessor register that regulates or monitors several parts of the microprocessor's operation.
• The Stack Pointer indicates the next data to be retrieved by pointing to the top of the Stack. The Stack Pointer is an 8-bit register that is initialised with 07H when it is reset.