Knowledge About Computer Hardware and Troubleshooting

Knowledge About Computer Hardware and Troubleshooting

Identifying the Hardware part of the system unit: A computer system sometimes has the subsequent components

1. Input Unit

2. Out place Unit,

3. show Unit

4. System Unit

Input Unit

Each pc includes a keyboard associate degreed a mouse that works as an input unit. Light pen, Scanner, analogue-to-digital converter etc.

Used as associate degree input.

Out place Unit.

Different types of printers (dot metrics printers, inkjet printers, optical device printers) area unit used as associate degree output unit with every pc. Map also

Or Drawing style etc. The plotter is employed for printing.

Display Unit

Each pc is employed as a Monitor, show Unit. presently alphanumeric display monitors area unit wide used similarly as ICT monitors.

System Unit

Computer Unit is the same because the enclose the box. The system unit sometimes has subsequent parts:

(1) circuit board

(2) receptacle

(3) Key Board connexion

(4) Processor

(5) PS/2 Mouse connexion

(6) science Co Processors

(7) interface

(8) RAM

(9) Parallel Port

(10) Rom

(11) USB Port

(12) DIP switch

(13) Rechargeable Ebill Battery.

Motherboard

The motherboard is that the most significant circuit card on a pc wherever several natural philosophy elements are put in and used on pc

As a cooperative of all activities, every device is connected to board in a way or the opposite.

Processor

The processor may be a major and most significant a part of the pc. The processor is outlined because of the brain's brain. Speed of the processor. The speed of the pc work depends on the speed.

Math Co Processors

Math-co-Processor enhances the computer's processor speed whereas operating as a co-operator of Processor. However, note that presently the processors used ar in Co-Processor constitutional. during this case, completely different Math-co-pressor isn't used.

RAM:

RAM is that the device that's wont to store the computer's information throughout the process. RAM may be a sort of Temporary memory device referred to as Primary Memory. scan / Write sort of RAM

Memory goes on and on.

ROM:

Known as permanent Permanent storage or primary memory. BIOS's directions ar hold on store throughout producing that is Screen-Display with pc On.

BIOS encompasses a self-test program that checks pc and connected peripherals throughout pc booting. Note that this can be scan solely.

Rechargeable batteries

The motherboard is supplied with a three: five or 3 potential unit battery. This battery is hopped-up by CMOS Chip on pc Off.

DiP switch

DIP accumulation is simply offered on XT pc. it's eight ON / OFF Switch

Sweet-Switch may be a Setup utility at XT pc

The program doesn't need to do therefore during this case by throw / ON

Computer Configuration is OK.

Expansion Slot:

Different types of cards (sound card, TV card, modem, VGA card) are connected through G slots. for instance,

ISA Slot- sixteen-bit information Transmission

PCI Slot- thirty-two-bit information Transmission

AGP Slot- sixty-four-bit information Transmission

Clock generator

Data processing is feasible on little motherboard chips like processors, mathematics co-processors, advantageous interrupts controllers, programmable peripherals interfaces, etc. Clock generator incessantly sends through varied clock sign motherboards.

PIT (Programmable Interval Timer):

PIT is employed to refresh Clock management and dynamic RAM by acceptive varied varieties of the clock pulse.

PPI (Programmable Peripheral Interface)

The programmable peripheral interface has 3 four-bit port. It will be designed as every port input or output. Port A, scan Keyboard and browse Port B Progarmable Internal timer by cable Port C, 8253 timer output channel.

PIC (Programmable Interrupt Controller)

Every time a pc is needed to speak with nobody peripheral. All input and output functions of the pc ar through interrupt signals. Request Peripheral, Interrupt Controller to interrupt the mainframe by causing a sign.

Motherboard External jumper setting

There are many switch and LEDs on the skin of the pc casing, that are connected with Jumper's motherboard.

USB Port:

The motherboard typically consists of 3-4 four pins USB port. Generally, printers, scanners, cameras, pen drives, etc. ar more to that.

Keyboard connector:

Two varieties of keyboard connective ar used for serial (DIN) and postscript / a pair of (MINI Din).

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