WHAT IS COMPUTER? COMPUTER is an electronic machine that follows a set of instructions in order that it may be able to accept and gather data and transform these into information.
OUTLINE 1. COMPUTER BASIC 2. INPUT UNIT AND OUTPUT UNIT 3. CENTRAL PROCESSING UNIT 4 . HARDWARE AND SOFTWARE 5.CREATING, MOVING,DELETING FOLDER AND FILES
Computers in Daily Life Accounts Games Educational On-line banking Smart ID cards Supermarkets Working from home (Tele-working) Internet
A computer system consists of three primary units: 1.Input units – accept data 2.Processor unit – processes data by performing comparisons and calculations 3.Output units – present the results
Central Processing Unit Brain of the computer. It directs and controls the entire computer system and performs all arithmetic and logical operations.
Input Devices Allows data and programs to be sent to the CPU. Keyboard Mouse Joystick Microphone Webcam Scanner Monitor
Other Pointing Devices Trackball Touch pad Touch Screen
Joystick – input device for computer games Light Pens – light-sensitive penlike device Stylus – penlike device commonly used with tablet PCs and PDAs
Scanning Devices Optical scanners Card readers Bar code readers Character and mark recognition devices
Output Devices Media used by the computer in displaying its responses to our requests and instructions. Monitor Audio Speakers Printer
Hardware Hardware is basically anything that you can touch with your fingers. Computer Case CPU (central processing unit...Pentium chip) Monitor Keyboard & Mouse Disk Drive, Zip Drive, CD-ROM, DVD, Hard Drive Memory (RAM) Speakers Printer
Software Software is the programs and applications that tell the computer what to do and how to look. Computer programmers write the codes/instructions that make-up software applications/programs. HTML is a type of computer programming language that allows programmers to make web pages.
PCI-Peripheral Component Interconnect Local Bus AGP- Accelerated Graphics Port bus USB- Universal Serial Bus Port
Introduction into files and folders (directory) A file, or document, is a collection of data that has a name and is stored in a computer A folder stores a number of files
Organizing Files and Folders
Working with Folders and Files R ight-click a blank area in the folder window, point to New, and then click Folder ) Type a name for the folder , and then press the Enter key.
Working with Folders and Files Moving and Copying Files and Folders Moving a file removes it from its current location and places it in a new location you specify Copying places the file in both locations
Working with Folders and Files Naming and Renaming Files Filenames provide important information about the file, including its contents and purpose Main part of the filename Dot File extension A filename extension identifies file type and indicates program in which file was created Deleting Files and Folders Recycle Bin is an area on your hard disk that holds deleted files until you remove them permanently