CPU

CPU

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 goa)Multi coreIts composed two or more independent CPU in one Chip

b)CacheExpensive high speed memory which used to storing frequently used instructionc)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

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 processors temperature within a safe range.Note: Wherever you see Heat-sinks there is CPU near By.....they can't stay far away.

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

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 interprets instructions to the computer, performs the logical and arithmetic processing operations, and causes the input and output operations to occur.

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 PROCESSOR & MICROPROCCESSOR

Example CPU

Intel Pentium D

AMD Athlion 64

Intel Pentium M

Intel Family

In Intel family we have

Pentium DPentium I-IVPentium MCeleronCore i7Core 2 Duo

Storage (Primary/Secondary Memory)

Input

Output

Procesor

HOW THESE COMPUTER WORKS?

Monitor,Printer

CPU must be connected to input device, output device and storage device to carry out the activities

Data

Information

INFORMATION PROCESSING CYCLE

Data

Information

Storage (Primary/Secondary Memory)

Input

Output

Procesor

HOW THESE COMPUTER WORKS?

Monitor,Printer

CPU must be connected to input device, output device and storage device to carry out the activities

Data

Information

INFORMATION PROCESSING CYCLE

Data

Information

Good website for what each component is and how it works. http://www.pcguide.com/ref/index.htm

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).

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 (=)

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

MWISH0Thanks t0 all wh0 c0ntribute in this slide

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