Central Processing Unit (CPU)
A
CPU is brain of a computer. It is responsible for all functions and processes.
Regarding computing power, the CPU is the most important element of a computer
system.
COMPUTER = Arithmetical Logical Unit (ALU) + Control Unit (CU)
+ Register Array (RA)
The
latest processor technology has resulted in CPU manufacturers finding ways to
incorporate more than one CPU core onto a single chip. These CPUs are capable
of processing multiple instructions concurrently:
Single
Core CPU -
One core inside a single CPU that handles all the processing. A motherboard
manufacturer might provide sockets for more than one single processor,
providing the ability to build a powerful, multiprocessor computer.
Dual
Core CPU -
Two cores inside a single CPU in which both cores can process information at
the same time.
Triple
Core CPU -
Three cores inside a single CPU that is actually a quad-core processor with one
of the cores disabled.
Quad
Core CPU -
Four cores inside a single CPU
Hexa-Core
CPU -
Six cores inside a single CPU
Octa-Core
CPU -
Eight cores inside a single CPU
The
CPU is comprised of three main parts:
1.
Arithmetic Logic Unit (ALU):
Executes all arithmetic and logical
operations. Arithmetic calculations like as addition, subtraction,
multiplication and division. Logical operation like compare numbers, letters,
or special characters.
2.
Control Unit (CU):
Control Unit (CU) controls and
co-ordinates computer’s components.
1.
Read
the code for the next instruction to be executed.
2.
Increment
the program counter so it points to the next instruction.
3.
Read
whatever data the instruction requires from cells in memory.
4.
Provide
the necessary data to an ALU or register.
5. If
the instruction requires an ALU or specialized hardware to complete, instruct
the hardware to perform the requested operation.
3.
Registers Array:
Stores the data that is to be executed next, "very fast storage area that
is used to increased speed of CPU processing".
){kind=link}
0 Comments