CPU

CPU

Saturday, December 28, 2013

Ray Mkindo: Be a Programmer

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CPU
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Before I start I wish we could go back a
little and see some terminology which
can be found in CPU class. In order to
make it easy as we go
a)Multi core
Its composed two or more independent
CPU in one Chip



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b)Cache
Expensive high speed memory which used to storing
frequently used instruction
c)Sockets and slots:
Processors either fit in a socket or slot,
depending on their construction
d)Pins
Within the categories of sockets and slots,
there are different types of each. The types vary by
size, and number and configuration of pins


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e)Fans and heat-sinks
Heat-sinks are little radiators used to radiate the
heat away from the processor. Together with the
fan they keep the processor’s temperature within a
safe range.
●

Note: Wherever you see Heat-sinks there is CPU
near By.....they can't stay far away.



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Front side Bus {FSB}
Measured in Megahertz or Gigahertz,
FSB is the channel that connects the
processor with the main memory.
I think you have notes it in your processor it can be written there example 1.5Ghz or 2Ghz



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What is CPU?
The brains of the computer, the CPU is the device that performs the
calculations that make computing possible.
What does a CPU Do?
➢

➢

➢

The CPU inte rp re ts ins truc tio ns to the c o m p ute r, p e rfo rm s the lo g ic a l a nd
a rithm e tic p ro c e s s ing o p e ra tio ns , a nd c a us e s the inp ut a nd o utp ut o p e ra tio ns to
o c c ur.
consists of hundreds of thousands or millions of electronic circuits.
In today's PCs the CPU is contained in a single silicon chip called a
microprocessor chip

➢

It is considered the “brain” of the computer.

➢

Also called the CPU as PR
OCESSOR & MICROPROCCESSOR



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Example CPU
Intel Pentium D



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AMD Athlion 64



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Intel Pentium M



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Intel Family
In Intel family we have
Pentium D
Pentium I-IV
Pentium M
Celeron
Core i7
Core 2 Duo


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HOW THESE COMPUTER WORKS?
CPU must be connected to input device, output device and
storage device to carry out the activities
Input

Procesor
Procesor

Data

Data

Information

Information

Output

Monitor,
Printer

Storage
Storage

(Primary/Secondary Memory)

INFORMATION PROCESSING CYCLE


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HOW THESE COMPUTER WORKS?
CPU must be connected to input device, output
device and storage device to carry out the
activities

Input

Procesor
Procesor

Data

Data

Information

Information

Storage
Storage


INFORMATION PROCESSING CYCLE

Output

Monitor,
Printer

CPU
The Control processing unit (CPU) controls all
activities within the system. For every instruction,
the control unit repeats a set of four basic
operations called the MACHINE CYCLE
A CPU consists of two subcomponents:


Control Unit (CU)
Arithmetic Logic Unit (ALU).



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The Arithmetic-Logic Unit and
Control Unit
An arithmetic logic unit (ALU) and control unit is one of the
core components of all central processing units.
Arithmetic operations: e.g., add, subtract, multiply, divide,
square root, cosine, etc.
Logical operations: e.g., compare two numbers to see which is
greater, check whether a true/false statement is true, etc.
Comparison operation : e.g:AND, OR, NOT, NAND, NOR, XOR
and equacalence (=)



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Factors Affecting Processing Speed
➢

Clock rate of the CPU

➢

Computer word size

➢

Bus speed

➢

Main memory size

➢

Cache memory size

➢

instruction set complexity

➢

Number of processing units



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“MWISH0”
Thanks t0 all wh0 c0ntribute in this
slide



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CPU

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