computer hardware (compiled by n.shanmugasundaram)

7/31/2019 Computer Hardware (Compiled by N.shanmugasundaram)

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COMPUTER An Electronic machi

Compiled by

Prof. N.Shanmugasundaram,HOD ECE dept,Vidyaa Vikas College of Engg & TTiruchengode 637214,Namakkal District,

Tamilnadu, India.


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Different Parts of a Computer

Monitor

Mouse

Printer (Inkjet)

Key Board

CPU cabinet UPS


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INPUT UNITS : Key Board, Mouse, Scanner, Barcode Scanner, Pen Drive, CD,

OUTPUT UNITS : Monitor, Printer, Speaker, Pen Drive, CD, DVD

CPU : Brain of Computer ( Processor )


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Key Board

Keyboard is the input device that enables user to enter data into a computer, control cursor and pointer locations,and to control the dialog with the computer.

Standard keyboard 101 to 104 keys

Type of connectors: PS2 as well as USB connector

Various brands (e.g. TVSE, Logitech, HP, etc) Price: Rs. 200/- to Rs. 1500/-


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Mouse

A mouse is a handheld pointing device for computers to control themovement of the cursor or pointer on a display screen.

Just looks like a MouseOptical MouseTypes of connector: PS2 as well as USB connector Various brands (e.g. Logitech, HP, etc) Price :150/- to Rs. 500/-


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Monitor

Monitor, also known as display screen, is a computer peripheral device capable of showing still or moving imagesgenerated by a computer and processed by a graphics card.

Just looks like a TVTypes: CRT, TFT, LCD having different size

COM port availableVarious brands (e.g. Samsung, Philips, LG, HP, etc) Price Rs. 4000/- to Rs. 10000/-


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Cabinet

It is a Box containing Mother Board, CPU, SMPS,RAM, PCI Cards, Hard Disc, CD/DVD Drive, FloppyDrive, Ports, etc

Types: ATX, BTX,

Size varies with form factor of the mother board

Price: Rs.1200/- onwards


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CPU (Central Processing Unit)

A central processing unit (CPU), also known as processor. It processes,instructions and data contained in the software.

Popular Brands: Intel (Celeron, Pentium Dual core, i3, i5, i7,

AMD (Sempron, Athlon, Phenom, )

CPU Speed measured as MIPS (Million Instructions per Second)

Price : Rs. 7000/- to 20000/-


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SMPS (Switch Mode Power Supply)

Switch Mode Power Supplies is the latest technologyfor high efficiency power supplies. The switch modepower supply, uses a high frequency switch tomaintain the output voltage.

SMPS provides DC voltages to CPU and other peripheral units.

Voltage output from SMPS: +5V, +3.3V, +12V1 , +12V2, -12V,

as well as a standby 5V.

Price : Rs. 600/- to 4000/-


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RAM (Random Access Memory)

Random Access Memory (RAM) is a volatile memorywhich holds the data & program while CPU executes.

Higher the capacity of RAM; Faster the Computer.

Types based on design : SIMM, DIMM, Types based on speed : EDO, DDR1, DDR2, DDR3,

Capacity: 512MB, 1GB, 2GB, 4GB, 8GB, 16GB,

Price : Rs.750/- onwards


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Hard Disk

Hard disk drive, also known as hard drive or hard disk,is a magnetic disk to store large amounts of computer data.

A hard disk uses rigid rotating platters (disks). It stores andretrieves information from a magnetic surface.

Brands: Maxtor, Seagate, Samsung, HP, etc

Types: SATA, PATA

Capacity: 320GB, 500GB, 1TB,

Price : Rs.2400/- (500GB), Rs. 4300/- (1 TB)


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PCI Cards (e.g. NIC Card, Sound Card, etc)

Network Interface Card is also called a LAN Card. A NIC card is physicacircuit board that connects a computer to a local / global computer network.LAN card is connected to the network with Twisted pair cable & RJ4connector.

Sound card helps to improve the sound output of the computer with real effects.

Price: Rs.150/- to Rs.500/- (for Network Interface Card)

PPT 8.1.12


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Other Accessories


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Printer

Printers are output devices which help in printing aninformation as a hard copy .

Type : 1. Dot Matrix Printer (80~132 Columns)(Rs.5000/- to 15000/-)

2. Laser Jet (Rs. 5000/- to 20000/-)3. Ink Jet (Rs. 2500/- to 8000/-)

Brands: Epson, TVS, Canon, HP, Samsung


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Mother Board

A motherboard is the centralor main circuit boardcontaining a processor,memory slots, HDDcontroller, ports, etc .

All add-on Peripherals anddevices are connected to thedifferent slots on this.

Price : Rs. 2500/- to15000/-


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Mother Board

All slots will be seriallynumbered and functionsstated.1 Joint Mouse & Key Board here2 Attached Pen Drive & USB Printer also3 Attached Printer (Dot Matrix)4 Attached Processor (CPU)

5 For Graphic Card6 Battery for Date & Time7 Slot for Hard Disk & CD-DVD Drive8 Slot for RAM9 Slot for Floppy Controller 10 CPU fan power socket11 SMPS Socket


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UPS (Uninterrupted Power Supply)

UPS provides uninterrupted power backup for short durationto the Electronic and computer-based equipment in theevent of power failure.

Types: ONLINE and OFFLINE

Standard Models: 600VA, 1KVA,

Backup time depends on the battery capacity

Price : Depends on KVA (Kilo Volt Ampere) and the backupperiod.

Higher the Backup Time More the Cost


18/18Computer An electronic machine

Thank You

computer hardware (compiled by n.shanmugasundaram)

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