COMPUTER

4. Output Unit

means by which data is displayed on the computer screen to the user. An output unit is responsible for presenting information or results to the user in a human-readable or perceivable form. Examples are Monitor, Printer, Speaker, Plotter, Projector etc.

CPU (Central Processing Unit)

CPU is made up of ALU and CU. Both control (control unit or CU) and arithmetic & logic unit (ALU) combine called as Central Processing Unit (CPU). The Processor Unit (CPU)

It is the brain of a computer system.

All major calculation and comparisons are made inside the CPU and it is also responsible for activation and controlling the operation of other unit.

This unit consists of two major components that are arithmetic logic unit (ALU) and control unit (CU).

Central Processing Unit (CPU) consists of the following features −            CPU is considered as the brain of the computer.

•        CPU performs all types of data processing operations.

•        It stores data, intermediate results, and instructions (program).

•        It controls the operation of all parts of the computer.

CPU itself has following three components.

•        Memory or Storage Unit

•        Control Unit

ALU(Arithmetic Logic Unit)