PRESENTED BY:HARIZ AMIRUL BIN AIDI ROSLAN

SHM 12-07-3400

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A CASE CONTAINS

ELECTRONIC

COMPENENTS OF

THE COMPUTER

USEDTO PROCESS

DATA

SYSTEM UNITS

CONTAIN MOTHERBOARD

PROCESSOR

MEMORY

DRIVE BAY

POWER SUPPLY

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MOTHERBOARD

THE MAIN CIRCUIT BOARD OF THE

SYSTEM UNIT.

A COMPUTER CHIP CONTAINS

INTEGRATED CIRCUITS

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PROCESSOR

ALSO KNOWN AS

CENTRAL

PROCESSING UNIT

(CPU)

CPU INTAPRATES

AND CARIES OUT

THE BASIC

INSTRUCTION THAT

OPERATE A

COMPUTER

CPU CONTAINS

CONTROL UNIT(CU)

○ DIRECTS AND

CORDINATES

OPERATIONS IN

COMPUTER

ARITHMETICS

LOGIC UNIT (ALU)

○ PERFORM

ARITHMETICS,

COMPARISON AND

LOGGICAL

OPERATIONS

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CPU

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THE PROCESSOR CONTAINS

REGISTERS, THAT TEMPORARILY HOLD

DATA AND INSTRUCTIONS

THE SYSTEM CLOCK CONTROLS THE TIMING OF ALL

COMPUTER OPERATIONS

THE PACE OF SYSTEM CLOCK IS CALLED THE CLOCK SPEED AND MEASURED IN GIGAHERTZ (GHz)

A PROCESSOR CHIP GENERATES HEATS THAT COULD CAUSE THE CHIP TO BURN UP

REQUIRE ADDITIONAL COOLING HEATS SINKS LIQUID COOLING

TECHNOLOGY

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CONSISTS OF ELECTRONIC COMPENENTS THAT STORE ◦ INSTRUCTIONS

WAITING TO BE EXUCATED BY THE PROCESSOR

◦ DATA NEEDED BY THOSE INSTUCTIONS

◦ THE RESULTS OF PROCESSING DATA

BASIC ITEM THAT

BEEN STORE

THE

OPERATING

SYSTEM AND

OTHER

SYSTEM

SOFTWARE

APPLICATIONS

PROGRAMS

DATA BEING

PROCESSED

AND THE

RESULTING

INFORMATION

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MEMORY SIZE

Term Abbreviation Approximate Number Of

Bytes

Exact Number Of Bytes

ApproximateNumber Of

Pages Of Text

Kilobytes KB And K 1 Thousand 1,024 ½

Megabytes MB 1 Million 1,048,576 500

Gigabytes GB 1 Billion 1,073,741,824 500,000

Terabytes TB 1 Trillion 1,099,511,627,776 500,000,000

•EACH LOCATIONS MEMORY HAS AN ADDRESS

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Volatile memory

• Loses its contents when power is turned off

• Example : RAM

Nonvolatile memory

• Does not loses contents when power is removed

• Example: ROM, flash memory and CMOS

Type of memory

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MEMORY

Dynamic RAM (DRAM)

Static RAM (SRAM)

MagnetoresistiveRAM (MRAM)

Basic types of RAM chips exist

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A bay is an opening inside the system unit

in which you can install additional

equipment

A drive bay typically holds disk drives

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POWER SUPPLY

Converts the wall outlet AC power into

DC power.

Some external peripherals have an AC

adapter, which is an external power

supply.

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REFERENCES

Book

Information Technology Fundementals Module (MARA Professional Collage, Seri Iskandar)

Internet

http://www.youtube.com/watch?v=kStK089WDj4&featur

e=related

http://en.wikipedia.org/wiki/Volatile_memory

http://www.techterms.com/definition/system_unit

http://en.wikipedia.org/wiki/Power_supply

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