There are the 4 functions of a CPU

 There are the 4 functions of a CPU

The Central Processing Unit (CPU) is often considered the "brain" of a computer, and it performs various functions to execute instructions and manage data. The four primary functions of a CPU are:

Fetch:

The CPU retrieves, or "fetches," program instructions from the computer's memory (RAM). These instructions are stored in memory locations known as addresses.

Decode:

Once the instructions are fetched, the CPU decodes them to understand what operation needs to be performed. The instruction is translated into a series of control signals that the CPU can use to coordinate other components in the computer.

Execute:

In this stage, the CPU carries out the decoded instructions. This involves performing arithmetic or logical operations, moving data between different registers and memory locations, and updating the status of the CPU based on the instruction's outcome.

Write Back:

After the execution of the instruction, the CPU may need to write back the results to the memory or registers. This ensures that any changes made during the execution stage are stored for future use or reference.

These four functions are collectively known as the "Fetch-Decode-Execute" cycle, and they represent the basic operation of a CPU in processing instructions. The speed and efficiency of a CPU in performing these functions contribute significantly to the overall performance of a computer system.