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CENTRAL PROCESSING UNIT (CPU)

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Tanmayi Relangi

on 21 June 2014

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Transcript of CENTRAL PROCESSING UNIT (CPU)

Identify the components of the CPU
C
ENTRAL
P
ROCESSING
U
NIT (
CPU
)

Component types of CPU
Two typical components of a CPU are the following:

The arithmetic logic unit (ALU), which performs arithmetic and logical operations.
The control unit (CU), which extracts instructions from memory and decodes and executes them, calling on the ALU when necessary.
Parts of the CPU
Parts of the computer
Random Access Memory:
Random Access Memory is also known as the computer’s system memory. It needs power to be read; hence, when a computer turns off, the memory is lost.
CD-ROM:
Compact Disk Read-Only Memory is collectively known as CD ROM. With the help of laser optics technology, CD ROM reads information from a CD. However, it is not capable of writing information in on the CD.
Hard Disk Drive:
Hard disk drive is the main storage device of a computer. It uses uses disks that are made of aluminum or glass to store information. Hard drives are measured in gigabytes. Sometimes a special cache is used for quick retrieval of often-used information (such as web pages).
Floppy Disk Drive:
Floppy disk drive helps store and read data on a removable floppy disk.
Microprocessor:
Microprocessor functions as the central processing unit of the computer which provides computation control. Its speed is measured in megahertz. It holds info about the operating system of the computer. The microprocessor is one type of ultra-large-scale integrated circuit that consists of extremely tiny components formed on a single, thin, flat piece of material known as a semiconductor.
LAN Card:
A LAN Card or Network Interface Card is also an expansion card. Also known as the modem, it helps the computer to connect to another computer on a Network.
Video Card:
Video Card is an expansion card that is connected to the motherboard. It serves as the visual link between the user and its computer, allowing the user to view and manage the computer’s software data.
Motherboard:
The Motherboard is the computer’s circuit board where all the ‘inside parts’ are connected. It contains the microprocessor; important computing components; different types of memory chips; mouse, keyboard, and monitor control circuitry; and logic chips that control various parts of the computer’s function. Having as many of the key components of the computer as possible on the motherboard improves the speed and operation of the computer.
Technology in modern computers
On large machines, the CPU requires one or more printed circuit boards. On personal computers and small workstations, the CPU is housed in a single chip called a microprocessor. Since the 1970's the microprocessor class of CPU's has almost completely overtaken all other CPU implementations.
Modern CPU's are small and square and contain multiple metallic connectors or pins on the underside. The CPU is inserted directly into a CPU socket, pin side down, on the motherboard.
About it
CPU is the abbreviation for central processing unit.

Sometimes referred to simply as the central processor, but more commonly called processor, the CPU is the brain of the computer where most calculations take place. The CPU itself is an internal component of the computer.In terms of computing power, the CPU is the most important element of a computer system.

CPU in modern computers
video card
Microproccesor
LAN
Motherboard
RAM
Hard disk drive
CD-ROM
Floppy disk drive
Generation of modern computers
ROM:
Read-only memory (ROM) is a class of storage medium used in computers and other electronic devices. Data stored in ROM can only be modified slowly or with difficulty
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