SSC MTS EXAM

Detailed explanation-1: -A central processing unit (CPU), also called a central processor or main processor, is the most important processor in a given computer. Its electronic circuitry executes instructions of a computer program, such as arithmetic, logic, controlling, and input/output (I/O) operations.

Detailed explanation-2: -The four primary functions of a processor are fetch, decode, execute and write back. Fetch-is the operation which receives instructions from program memory from a systems RAM. Execute-is where the operation is performed. Each part of the CPU that is needed is activated to carry out the instructions.

Detailed explanation-3: -Input Unit The main function of input devices is to direct commands and data into computers. Computers then use their CPU to process this data and produce output. For example, a laptop’s keyboard is an input unit that enters numbers and characters.