Safety note

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SAFTYNOTES

Computer HardwareTechnician

Centre of Excellence in arts & design, MUET, Jamshoro

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Poor Safety Habits Can Harm BothThe User And The Computer!

To protect both yourself and the computer:Make sure power is off when disassembling, installing or

removing hardware, or doing preventive maintenance (cleaning).

Never disassemble the monitor or power supply unless you have been specifically trained on these components.

Monitors develop high voltage when turned on, and both monitors and power supplies have capacitors (electronic parts that hold an electrical charge) that can hurt you even if the power has been removed.

Effective use of computer terms means more than just knowing and using the correct terminology, it also means using it appropriately and explaining computer terms with simple, everyday language and examples.



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MOTHERBOARD



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MotherboardComputer Hardware

Technician


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The Motherboard• Largest, most important circuit board

– Main board or system board– Contains the CPU, expansion slots, other devices

• Motherboard component categories– Processing, temporary storage, communication,

power• All devices communicate with motherboard CPU• Peripheral device links to motherboard via cable• Motherboard ports may be outside of the case

– Keyboard, mouse, parallel, USB ports, sound ports



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Motherboard: Arial ViewComputer Hardware

Technician


All hardware components are either located on the motherboard or directly or indirectly connected to it because they must all communicate with the CPU

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Motherboard: Rear/Back IO Panel



A motherboard provides ports for common I/O devices

In the Rear or Back Panel

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Motherboard: FAN & Heat Sink



The processor is hidden underneath the fan and the heat sink, which keep it cool

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Motherboard: RAM / DIMM Slots



A DIMM holds RAM and is mounted directly on a

motherboard

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Motherboard: IDE Cable Connector



Using a parallel ATA interface, a motherboard has two IDE connectors, each of which can

accommodate two devices; a hard drive usually connects to the motherboard using the primary

IDE connector

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MotherboardIDE Cable



This system has a CD-ROM and a Zip drive sharing the secondary IDE cable and a hard drive using the primary IDE cable

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Motherboard:Power Supply Connection



The motherboard receives its power from the power supply by way of a 20 or 24-pin connector called the P1 connector

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Motherboard: Firmware & the Coin Battery



This firmware chip contains flash ROM and CMOS (Complementary Metal-Oxide Semiconductor ) RAM.

CMOS RAM is powered by the coin battery located near the chip

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THANKYOU



Safety note

Technology

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