Computer Hardware And

Networking

Computer Hardware

The computer Hardware refers to the physical components of computer. In deed it is a machine which can perform various tasks for us.

Hardware like Motherboard, Disk Drives, Daughter Board (LAN card, sound card, VGI card, etc ).

Computer Hardware Computer Hardware ComponentsComponents

Mother board-

It is themain printedcircuit board (PCB),It hold many of the crucial electroniccomponents of the system.

Central Processing UnitCentral Processing Unit

The microprocessor consists of three sections:1.Arithmetic Logic Unit2.Registers3.Control Unit

MEMORY SLOTMEMORY SLOTThere are 4 shortThere are 4 short

slots for SIMMslots for SIMM

memory.memory.

This board hasThis board has

two long slots fortwo long slots for

a new kind ofa new kind of

memory calledmemory called

DIMM DRAMDIMM DRAM. .

RAM-Random Access Memory

It is a storagedevice thatTemporarystores datawhile thecomputer isturned on.

HDD- Hard Disk DriveThe main storage area in the computer where the operating system is stored along with other applications.

DVDDVD Drives Drives• DVD are like CD, DVD are like CD,

which have more which have more storage than CDstorage than CD

DVD drives are now DVD drives are now being installed in being installed in new computers new computers instead of CD drives. instead of CD drives.

• Computer DVD Computer DVD drives are able to drives are able to read data stored on read data stored on CD-ROMS and CD-ROMS and DVDs and can play DVDs and can play both video and audio both video and audio DVDs. CD-ROM DVDs. CD-ROM drives cannot read drives cannot read DVDs. DVDs.

Computer Networking

Networking HardwareThe devices which are used to connect two or more computers placed anywhere can be termed as Hardware for Networking.

Networking devices

There are many networking devices-

1.LAN cards2.Repeaters3.HUB4.Switches5.Router6.Networking Hardware.

1.LAN Card

A LAN (local area network) card connects a computer to a network, whether local of foreign. It is connected to the computer mother board via serial port. Now a days these are by default connected to the Mother Board.

2.Repeaters

• Connectivity devices that regenerate and amplify an analog or digital signal so as to transfer it to far places.

3.HubsMultiport repeater containing multiple ports

to interconnect multiple devices. They reduces the

strength of signal for every connected port.Due to this they are not used now a days.

4.SwitchesSubdivide anetwork intoSmaller

logicalpieces.They can alsoamplify thesignal.

5.Routers

Multiport connectivitydevice.There main

purpose is to connect two or more network connection having different Network IDs.

6.Networking hardware

a. Cables and connectorsb. Networking tools.

a. Cables and connectors

Coaxial cables -These cables are used to carry electrical signals b/w two or more computers.

UTP - Unshielded Twisted Pair cables.It is a set of three or four pair of wires, with each pair twisted around each other to prevent electromagnetic interference.

Fiber optical cable Fiber optic cable carries light signal. These are used to carry data at distant places, which cannot be done by coaxial cables or UTP. They are more secured, less loss in signal strength.

Connectors

RJ45 – This connector is used to connect the twisted pair cables with the networking devices.

BNC- it is commonly used in base 10 Ethernet network, it is used to end the magnetic signal within the cable which carries info.

Networking Tools

Crimping tool - this tool is designed for the connections of the UTP cables with the connectors by cutting, stripping, deforming.Crimping was developed as a high-quality, low cost replacement for soldering process.

Krone tool – A Punch Down tool used by the telecommunication and network technicians. It is used for inserting wires in insulation- displacement connector.

Summary -Together with the combination of hardware and networking the existing form of networking is available, which is fast, compact, easy to use and secured.