Question

Which parts of the computer system executes the program and how

Answer 1

Answer:

Central Processing Unit

The CPU (Central Processing Unit) is the portion of a computer system that carries out the instructions of a computer program, and is the primary element carrying out the computer's functions. It is the unit that reads and executes program instructions.

Answer 2

The CPU (Central Processing Unit) is the part of the computer system which executes the program.

• The CPU is the soul of the computer. A program is a progression of instructions which are stored in the main memory. When a program is operated, the CPU receives the instructions and executes or pursues the instructions.

• The Central Processing unit fetches, decodes and executes cycle

1. It fetches to get the following instruction from the main memory.
2. It decodes to specify what instruction to perform.
3. It executes to perform the instruction.

• Every program ends up as a progression of basic instructions that comprise arithmetic and logic operations and regulate the flow of operations.

• Arithmetic and logic operations comprise add, subtract, multiply, divide and comparison of values such as equality, less than, and greater than. Control flow operations are used to specify what instruction to execute next.

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