Module 1- Assembling Disassembling

download Module 1- Assembling Disassembling

of 20

  • date post

  • Category


  • view

  • download


Embed Size (px)



Transcript of Module 1- Assembling Disassembling


Saint Michael College

Cantilan, Surigao del Sur

MODULE 1- COMPUTER ASSEMBLING/ DISASSEMBLING Computer is an electronic machine used to process data.

Four elements of computer system:

1. Hardware - is any part of computer that you can touch, such as the monitor, the keyboard, and the mouse.

2. Software - is a set of instructions that tells the computer what to do and how to do it.

3. People also known as users, operate the computer hardware.

4. Data- consist of raw facts. They can be in the form of letters, numbers, sounds, and pictures.

Basic parts of the computer:

1. Monitor it looks like a TV screen.

2. Keyboard the typewriter like peripheral that allows the user to enter character input into a computer.

3. Mouse- the primary input device, it has a special ball that allows you to roll it around on a pad and move the cursor around on the screen.

4. Printer it is used to print on paper what you have done in your computer.5. CPU case

Input Devices:

1. Keyboard

5. Joystick

2. Mouse

6. Scanner

3. Trackball

7. Digital Camera

4. Touchpad

8. Graphic Tablet

Output Devices:

1. Monitor

2. Printer

3. Speaker

Storage Devices:

1. CD ROM (Compact Disc Read Only Memory)

2. DVD (Digital Versatile Disc)

3. Floppy Disk

4. Hard Disk

5. Flash Disk or Memory Keys



1. Screwdriver

Flat screwdriver

Star screwdriver

2. Pliers

3. Flashlight

Types of Monitor:

1. CRT (Cathode Ray Tube) a common type of computer display that is similar in design to a television.

2. LCD (Liquid Crystal Display) a type of monitor display that takes up very little desk space and uses fluorescent backlighting to create the display.

A flat panel display is the desktop version of the display you find in laptop computers. The advantages of a flat panel are as follows:

Requires less space and less power than a CRT.

Has no geometric distortion.

May deliver a sharper image.

Types of Keyboard:

1. QWERTY Keyboard (Sholes key layout) - the standard keyboard, meaning that the alphabetic keys are arranged in the following pattern:







2. Dvorak Keyboard the most alternative, designed by University of Washington professor August Dvorak and William Dealey in 1936. The Dvorak layout uses the following pattern:







3. Logitech Cordless Comfort Duo is a representative keyboard the mouse combination providing a split keyboard, wireless connections to eliminate cables and untether you from the computer itself.

Kinds of Mouse:1. Mechanical mouse a type of pointing device that uses a rubberized ball and mechanical wheels to track movement over a surface.

2. Optical mouse a type of pointing device that uses light and a tiny camera to track movement over a surface. This kind of mouse is easy to maintain, as it doesnt collect dust and grime; it also doesnt require a specialized mousing surface.

Types of Printer:1. Dot matrix printer work by using a grid, or matrix, of tiny pins that strike an inked ribbon against the paper to print a character.2. Inkjet printer work by squirting tiny droplets of ink from tiny nozzles, or jets, riding on a print head that moves back and forth across the paper.

3. Laser printer a type of printer that creates an image on the page using a sophisticated system involving a laser beam, a photosensitive drum, and powder fine toner. Laser printers deliver high print quality, but are used mainly for black and white printing.

CPU cases:

1. Full tower cases a type of PC case that provides the maximum amount of interior space and many drive bays. At least two feet tall, this kind of case normally sits vertically on the floor, rather than flat on a desktop. 2. Mid tower case a popular type of PC that combines flexibility with space saving design. With an average height of about 20 inches, these cases can sit unobtrusively on a desktop, but they still offer enough drive bays to handle most users needs.

3. Mini tower case the smallest type of PC case designed to stand upright. Although these cases are useful where desk space is limited, they limit the number of drives that can be installed in the system. 4. Desktop case a type of PC case that is designed to lie flat, usually under the monitor, and generally offers little capacity for expansion.

5. Server case a type of computer case thats designed to accommodate the space and expandability needs of servers. These cases tend to be square, rather than rectangular like tower case.

6. Rack mount case a type of computer case designed to fasten into a server rack; used by businesses as a space efficient way to organize large numbers of servers.

Internal Components of the PC (Personal Computer):

1. Motherboard - is the heart of the computer. the big printed circuit board that covers most of the bottom of the system unit. The motherboards main job is to provide an area where all the internal components of the PC can connect. Types of Motherboard:

AT - a motherboard form factor invented by IBM in the early 1980s, it featured a large keyboard plug and split P8/P9 power socket.

ATX the motherboard form factor that now dominates the PC market. It features a large number of external connectors, including PS/2 connectors for the keyboard and mouse and P1 power socket. Parts of the motherboard:

CPU socket or ZIF (Zero Insertion Force) Socket CPU fan power connector

Heat sink /fan the heat sink will pull excess heat away from the CPU core and a fan to draw the heat from the heat sink. Memory slots motherboard components that accept RAM sticks. Generally located near the CPU, they can be easily distinguished by the latches on either side that secure the DIMM or RIMM modules.

Types of memory slots:

DIMM (Double or Dual Inline Memory Module) comes in 168 pin SDRAM and 184 pin DDR SDRAM SIMM (Single Inline Memory Module) older style RAM stick that came in 72 pin and 30 pin configurations. Main power connector a connection between the outlet in your wall and the CPU and other components of your computer. Types of connector:

P1 a plug used to connect an ATX power supply to an ATX motherboard, compose of 20 pins P8/P9 a pair of plugs used to connect an AT power supply to an AT motherboard. P8/P9 connectors must be plugged in with the black wires next to each other. These connectors are faced and keyed, which is to say that they have different front and back faces and a small guide or key on one side so you cannot install them backward. Floppy connector to support floppy drives

EIDE (Enhanced Integrated Drive Electronic) connector provides a standardized interface for hard drives, CD media drives and other EIDE devices. Two types of EIDE cables:

40 wire the older version of cables 80 wire the newer version Even though one cable has 80 wires and the other has 40 wires, they both have only 40 pins.

Northbridge it acts as an intermediary for all data transfers between the CPU and the RAM. Southbridge handles some expansion devices and mass storage drives, such as hard drives and floppy disk drives. Expansion slots special standardized ports on a motherboard that enable you to expand the capabilities of your system by adding componentsTypes of expansion slots:

PCI (Peripheral Component Interconnect) slot general purpose 32 bit, 33 MHz expansion slots, which are designed to enable quick communication between internal hardware add-ons and the CPU. It is also common to Communication and Networking Riser (CNR). PCI slots are used only for network cards and modems, devices that enable you to connect a computer to the internet and to smaller networks. AGP (Accelerated/ Advanced Graphic Port) provide exclusive 32 bit, 66 MHz connections for video cards CMOS (Complementary Metal Oxide Semiconductor) Battery it enables the system to retain accurate date and time settings in the event of a complete power outage. Flash ROM (Read Only Memory) Chip or BIOS (Basic Input Output System) Chip a small set of code that enables the CPU to communicate properly with the devices built into the motherboard. It usually has a small, silver label with the programming companys name listed. It has 7x9 pin.

Front Panel Connector / LED (Light Emitting Diode)

Power switch

Reset switch

HDD switch


Power LED Jumper a