The peripheral devices of a computer. Setup and installation of peripherals

Lecture № 3

The peripheral devices of a computer. Setup and installation of peripherals

The objective of the lesson:

Tasks:

a) educational:To provide the students with a basic understanding of the  peripheral devices of a computer

b) developmental:The development of intellectual thinking, the ability to analyze, to listen carefully and to work independently

A peripheral device is an internal or external device that connects to a computer but does not contribute to the computer's primary function, such as computing.

Types of peripheral devices:

1.     Input

2.     Output

3.     Storage

4.     Communication

Input devices : the devices that allow data and instructions to enter a computer.

Input Devices:

•         Keyboard.

•         Mouse

•         Microphone

•         Scanner

Output devices: the devices that allow information to be represented (that is,given out) to the user.

Output devices:

•         Monitors

•         Printers

•         Speakers

Storage: Used to keep data when the power to the computer is turned off.

Storagedevices:

·        CD-ROM

·        CD-RW

·        DVD-R

·        DVD-RW

·        Flash drive

A communication device is piece of equipment or hardware designed to move information or data from one place to another, in other words, allowing one computer device to communicate with another.

·        Modem

·        Webcam

Input Devices
The Keyboard ·        A set of keys ·        You use the keyboard to type text, such as letters or numbers into the computer. ·        The keyboard allows the computer user to enter words, numbers, punctuation, symbols, and special function commands into the computer’s memory. ·        A keyboard typically has 101 or 105 keys. ·        Alphanumeric Keys: These keys are used for entering letters and numbers. ·        Special Keys: Keys such as Control (CTRL), SHIFT, SPACEBAR, ALT, CAPS LOCK, and TAB are special keys. These special keys perform special functions depending on when and where they are used. ·        Punctuation Keys: Punctuation keys include keys for punctuation marks, such as colon (:), semicolon (;), question mark (?), single quotation marks (‘ ’), and double quotation marks (“ ”). ·        Command Keys: Keys such as INSERT (INS), DELETE (DEL), and BACKSPACE are command keys.
Mouse ·        The mouse allows you to select an item on the screen. ·        Mouse moves your cursor to different points on the screen. ·        Most mouse devices have at least two buttons, left and right. ·        Most of the actions are performed by clicking the left button. ·        The right button is used for specific functions.
Joystick ·        The main use of a joystick is to play computer games.
Trackball ·        A trackball is a mouse lying on its back.
Microphone ·        You can record sound into the computer by using a microphone.
Scanner ·        A scanner can be used to input pictures and text into a computer. ·        A scanner reads the page and translates it into a digital format, which a computer can read. ·        There are two main types of scanner; Hand-held and Flat-bed.
Output devices
Monitor ·        The part of a computer that allows you to see what the computer is processing ·        Types of monitors: ·        Cathode-ray tube (CRT) ·        Liquid Crystal Display (LCD or flat-panel)
Printer A printer is a peripheral device that produces a physical copy or hard copy of the computer’s output. Ink Jet Printer ·        least expensive, color, slower than laser printers Laser  Printer ·        More expensive, faster, lower per page cost than ink jet,	Inkjet printer Laser printer
Plotter •         A plotter is a printer that uses a pen that moves over a large revolving sheet of paper. •         It is used in engineering, drafting, map making, and seismology.
Storage devices
CD-ROM ·        CD-Read Only Memory ·        Storage device that uses laser technology to read data that is permanently stored on compact disks, cannot be used to write data to a disk.
CD-RW ·        CD-Read Write ·        A storage device that reads data from CD’s and also can write data to CD’s ·        Similar to a CD-ROM, but has the ability to write to CD.
DVD-R Digital Video Disk which can be written to one time. Once you record, it then becomes read only. Used to store home movies and pictures.
DVD-RW Digital Video Disk which can be rewritten to.
Flash drive ·        External storage devices that can be used like a external hard drive. ·        They have the capability to be saved to, deleted from, and files can be renamed just like with a normal hard drive. ·        Connect to USB posts.
Communication devices
Modem ·        Short for modulator-demodulator. ·        A modem is a device that enables a computer to transmit data over, for example, telephone or cable lines. ·        A Modem or Broadband Modem is a hardware device that connects a computer to a broadband network.
Webcam: ·        A device that is similar to a video camera. ·        For example, a webcam allows your friends and family to see you when communicating with them.

Literature:

1.        June J. Parsons, New Perspectives on Computer Concepts 18th Edition—Comprehensive, Thomson Course Technology, a division of Thomson Learning, Inc Cambridge, MA, COPYRIGHT © 2016; ISBN-10: 1-4239-0610-1, ISBN-13: 978-1-4239-0610-0.

2.        Reema Thareja Fundamentals of Computers. – Oxford University press: Oxford, 2014. -  288p

3.        George Beekman. Computer Confluence: Exploring Tomorrow's Technology. ISBN 0130661880, 9780130661883. Prentice Hall, 2003