Microprocessor and Microcontroller Important Questions and Answers

Microprocessor and Microcontroller Important Questions and Answers:

1. List the different types of 8051 instructions.

Answer:

  1. Data transfer instructions.
  2. Arithmetic instructions.
  3. Logical instructions.
  4. Control transfer or Branching instructions.
  5. Boolean or Bit Manipulation instructions.

2. What are the various operations performed by Boolean variable instructions of 8051?

Answer:

Bit manipulation instructions perform move, set, clear, complement, OR, AND operations and branches the program control on certain conditions.


3. Give the memory size of 8051 microcontroller.

Answer:

The program memory space of 8051 microcontroller can be up to 60k bytes long.