computer studies

1. CENTRAL PROCESSING UNIT

2. CONTENTS
What is CPU?
Functions of CU and ALU
Components of CPU
Descriptions of CU and ALU

3. What is CPU?
A central processing unit (CPU), also called
a central processor, main processor or
just processor, is the electronic circuitry that
executes instructions comprising a computer
program. The CPU performs basic arithmetic, logic,
controlling, and input/output (I/O) operations
specified by the instructions in the program.

4. Components of CPU
The central processing unit (CPU) consists of six main components:
 control unit (CU)
 arithmetic logic unit (ALU)
 registers.
 cache.
 buses.
 clock.

5. Functions of CPU
 The primary function of the central processing
unit is to execute programs.
 It takes information and processes them
according to your instructions.
 Calculations like Addition and subtraction, are
also done with the help of the CPU.
 It controls and gives commands to all Computer
parts such as memory, input, and output devices.
 Read data & instruction from the memory.
 All data and instructions go through the central
processing unit.

6. Descriptions of
Control Unit
A control unit or CU is circuitry
that directs operations within a
computer's processor. It lets the
computer's logic unit, memory,
and both input and output
devices know how to respond to
instructions received from a
program. Examples of devices that
utilize control units include CPUs
and GPUs.

7. Descriptions of
ALU
The computer central processing
unit ALU performs both bitwise
and mathematical operations on
binary numbers and is the last
component to perform
calculations in the processor.