Safety Procedure For User During Computer Assembling

Keep the work area free of clutter and clean.
No drinking or eating in the work area
Remove all jewellery and watches
Make sure fre extinguisher and frst aid kit are available
Make sure the power is of and the power plug has been removed from the socket when working inside computer.
Cover sharp edges with tape when working inside the

Safety Procedure To Prevent From

Data Loss and Damage

(Anti Static Precaution)

Electronic equipment is most vulnerable to ESD or

electrostatic discharge. A safety measure to avoid

loss of data or damage is by using anti-static wrist

strap when handling electronic equipments

Other than that, using anti-static mat ensures

equipment pulled from computer is protected when set aside.

Any equipment not in the computer must be stored

in anti-static bag, a specially designed bag that sheds whatever static electricity you have when you touch it thus preventing damage to the Safety Procedure To Prevent From Data Loss and Damage

(Electrical Precaution)

make sure all power cords are disconnected
• This is particularly important if you have one
of the latest ATX-based cases where power is
constantly fowing to devices in the system,

even when you think they are switched of.
• This power supports the case on-of switches
that are connected to the motherboard, as
well as features that include network based
startup support

Safety Procedure To Prevent From Data Loss and Damage

(Electrical Precaution)

ensure that network and telephone lines are not connected to PC
Peripheral devices such as the keyboard and mouse should also be disconnected, just to be extra safe.
Dismantling discrete electronic components such as your Power Supply or Monitor is dangerous. They contain high voltage capacitors, which can cause a severe electric shock if you touch them. These hold a charge even when the unit is not plugged in and are capable of delivering a fatal shock

Types of Power Disturbance

• Noise – any unwanted signal usually varying quickly that is
mixed with the normal voltage entering the computer.

Noise is caused by external devices such as fuorescent lighting, radios and television as well as components within the computer. Generally not a risk to hardware, software and data.

Undervoltage – occurs when power supply drops more

than fve percent below the normal volts and can cause

data loss but generally doesn’t cause equipment damage.

Overvoltage – also known as power surge occurs when

incoming power increases more than fve percent above

the normal volts. A momentary overvoltage called spike occurs when overvoltage last less than one millisecond. Overvoltage can cause immediate and permanent damage to hardware.

Computer Ports

Port is the point at which a peripheral attaches to or

communicates with a system unit so that the peripheral can send data or receive information from the computer.

port is a specialized outlet on a piece of equipment to which a plug or cable connects
• Hardware ports may be physically male (unusual, since
protruding pins easily break) or female (usual on equipment).
hardware ports can almost always be divided into two groups based on the signal transfer:
Serial ports send and receive one bit at a time via a single wire pair (Ground and +/-).
Parallel ports send multiple bits at the same time over several sets of wires.

Computer Ports

After ports are connected, they typically require handshaking, where transfer type, transfer rate, and other necessary information is shared before data are sent.
Hot-swappable ports can be connected while equipment is running. About the only port on personal computers that isn't hot-swappable is the keyboard PS/2 connector
Plug-and-play ports are designed so that the connected devices automatically start handshaking as soon as the hot-swapping is done. USB ports and FireWire ports are plug-and-play.

Connector

Connector joins a cable to a port. A connector at one end of a cable attaches to a port on the system unit, and a connector at the other end of a cable attaches to a port on the peripheral

USB

• USB (Universal Serial Bus) is a specifcation to establish
communication between devices and a host controller (usually personal computers).
USB is intended to replace many varieties of serial and parallel ports.
USB can connect computer peripherals such as mice, keyboards, digital cameras, printers, personal media players, fash drives, and external hard drives. For many of
those devices, USB has become the standard connection
method.
USB was designed for personal computers, but it has become commonplace on other devices such as smartphones, PDAs and video game consoles, and as a
power cord between a device and an AC adapter plugged
into a wall plug for charging

HDMI

HDMI (High-Defnition Multimedia Interface) is a compact audio/video interface for transmitting uncompressed digital data.
It represents a digital alternative to consumer analog standards, such as radio frequency (RF) coaxial cable, composite video, S-Video, SCART, component video, D-Terminal, and VGA.
HDMI connects digital audio/video sources—such as set-top boxes, Blu-ray Disc players, personal computers (PCs), video game consoles (such as the PlayStation 3 and some models of Xbox 360), and AV receivers—to compatible digital audio devices, computer monitors, and digital televisions.

SATA

The serial ATA (serial advanced technology attachment), or SATA computer bus, is a storage- interface for connecting host bus adapters to mass storage devices such as hard disk drives and optical drives. The SATA host adapter is integrated into almost all modern consumer laptop computers and desktop motherboards.
SATA ofers several compelling advantages over
the older parallel ATA (PATA) interface: reduced
cable-bulk and cost (reduced from eighty wires to seven), faster and more efcient data transfer, and hot swapping.

Examples of Computer Ports/

Connector

IEEE 1394 interface (Firewire) ^USB ^{Ethernet port} Serial port ^{Mini-DIN connector} ^{Ethernet over twisted} ^{pair using category 5} ^cable

Examples of Computer

Ports/Connector

Video Graphics _{VGA port} _Array _{eSATA Port} _{Mini-DIN connector} HDMI Type A socket Parallel port

VGA connector

Computer Assembling Procedure

1. Install power supply unit after disassembling the casing panel.

2. Install the processor / CPU into the socket.

3. Place heatsink and fan onto the processor after applying the thermal

paste. Connect the fan to CPU fan

connector.

4. Install memory (RAM) into memory

Computer Assembling Procedure

7. Mount the hard disk into the bay and connect

to the motherboard using IDE or SATA cable

and connect the power cable.

8. Mount the foppy drive into the bay and connect to the motherboard and connect the power connector.

9. Mount the optical drive into the bay and connect to the motherboard and connect the power connector.

Computer Assembling Procedure

10.Connect the power cable to the motherboard. Ensure all connections have been made properly before powering up the computer.

11.Closed the casing panel and

connect the display monitor to the

power supply and VGA connector.