CPU known as a processor is the brain of the computer, process data (input) and converts it into meaningful information (output). Arithmetic logical unit ALU Registers System Bus

1. Central Processing
Unit (CPU)
By: Ujjwal Thalang Limbu
Roll no. 26 1st sem

2. CPU known as a processor is the brain
of the computer, process data (input)
and converts it into meaningful
information (output).

4. The control unit is a component of a
computer's central processing unit (CPU)
which directs operation of the processor.
It controls communication and co-
ordination between input/output devices.
It reads and interprets instructions and
determines the sequence for processing
the data.

5. 5
FETCHING
EXECUTING
STORING DECODING

6. Processor
Control Unit
MEMORY
ALU
Step 1. Fetch
Calls an instruction into
memory. User want to
calculate 2 +2
Step 2.
Decode
Translate
instruction into
commands (to
binary form)
Ex: 1110000
Step 4. Store
Write result to memory
Step 3. Execute
Does the decoded
instruction
Add 2+2

7. The ALU is what performs all mathematical operations
inside the CPU.

9. Evaluates conditions
Makes comparisons
Can compare
• Numbers
• Letters
• Special characters

10. Special-purpose, high speed temporary memory
Holds information that CPU is currently working
on
Program Counter
Instruction Register
Memory Buffer Register
Accumulator
Data Register
Memory Address Register

13. Acknowledgement