Chapter TG.1, Problem 2PSA

Explanation of Solution

Instruction:

When a command is given to the computer by the user is called as instruction.

Machine Instruction cycle:

• Computer processor processes certain steps for the instructions that are received in the form of machine instructions.
• The instructions that are received are processed in step by step manner based on the direction that is received from the control unit.
• Machine instruction cycle consists of different phases in reading, interpreting the instructions that are received in the form of machine language, executing the instruction code and finally storing that code.
• The below are the four steps of the machine instruction cycle
  • Fetch
  • Decode
  • Execute
  • Store
• The above mentioned steps are carried out in a repeated way to complete the instruction that is given to the computer.
• The entire process is carried out using a microprocessor.

Working of the machine cycle:

• The instruction from the main memory is being fetched.
• The instruction that is fetched from the memory gets decoded in the control unit.
• The decoded instruction gets executed in the Arithmetic Logic unit.
• After execution, the results are being stored back in to the main memory...