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Comp 111chp 1

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  • 1. Subject Name Internet Fundamental and Applications Code COMP 113 INTERNET FUNDAMENTAL & Applications Chapter I By D.Balaganesh D.Balaganesh Lincoln University College Credit Hours
  • 2. Subject Name Internet Fundamental and Applications Code Credit Hours Overview Of Computer Data Process Hardware Using Software D.Balaganesh Lincoln University College Given Result
  • 3. Subject Name Internet Fundamental and Applications Code Credit Hours Definition of Computer • A computer is an electronic device. • It can accept data (input), manipulate (process), and produce information(output). D.Balaganesh Lincoln University College
  • 4. Subject Name Internet Fundamental and Applications Code Credit Hours General Operations • Computers can perform four general operations, which comprise the information processing cycle: 1. Input. 2. Process. 3. Output. 4. Storage. D.Balaganesh Lincoln University College
  • 5. Subject Name Internet Fundamental and Applications Code Credit Hours Data and Information • All computer processing requires data, • Data is a collection of raw facts, figures and symbols, such as numbers, words, images, video and sound, given to the computer during the input phase. • Computers manipulate data to create information. D.Balaganesh Lincoln University College
  • 6. Subject Name Internet Fundamental and Applications Code Credit Hours Cont. • Information is data that is organized, meaningful, and useful. • During the output phase, the information that has been created is put into some form, such as a printed report. D.Balaganesh Lincoln University College
  • 7. Subject Name Internet Fundamental and Applications Code Computer Characteristics • • • • • High speed. Accuracy. Reliability. Mass storage of information. Communication with other computers through network like internet. D.Balaganesh Lincoln University College Credit Hours
  • 8. Subject Name Internet Fundamental and Applications Code COMPONENTS OF A COMPUTER D.Balaganesh Lincoln University College Credit Hours
  • 9. Subject Name Internet Fundamental and Applications Code Credit Hours Primary Components of a computer • • • • • Input devices. Central Processing Unit. Memory. Output devices. Storage devices. D.Balaganesh Lincoln University College
  • 10. Subject Name Internet Fundamental and Applications Code Input devices • • • • • Mouse. Keyboard. Touch pad. Pointing stick. Scanner. D.Balaganesh Lincoln University College Credit Hours
  • 11. Subject Name Internet Fundamental and Applications Code Credit Hours CPU (Central Processing Unit ) • Interprets instructions to the computer, performs the logical and arithmetic processing operations, and cause the input and output operations to occur. • Performs all the calculations within the computer. • CPU speed measured in MHz. D.Balaganesh Lincoln University College
  • 12. Subject Name Internet Fundamental and Applications Code Credit Hours Memory: • RAM: Random Access Memory. Temporary memory. Electronic components that store data including numbers, letters, graphics and sound. Information stored is lost when the computer is turned off. D.Balaganesh Lincoln University College
  • 13. Subject Name Internet Fundamental and Applications Code Memory • ROM: Read Only Memory. Permanent memory. Chip that has start-up directions for your computer. D.Balaganesh Lincoln University College Credit Hours
  • 14. Subject Name Internet Fundamental and Applications Code Unit of Information • Bytes One character takes up about one Byte. One byte is equal to eight bits. Bits means binary digit. D.Balaganesh Lincoln University College Credit Hours
  • 15. Subject Name Internet Fundamental and Applications Code Cont. 1 Bit = 0 or 1 8 Bits = 1 Bytes 1024 Bytes = 1 KB 1024 KB = 1 MB 1024 MB = 1 GB 1024 GB = 1 TB D.Balaganesh Lincoln University College Credit Hours
  • 16. Subject Name Internet Fundamental and Applications Code Output Devices • Computer screen. • Printer. • Speaker. D.Balaganesh Lincoln University College Credit Hours
  • 17. Subject Name Internet Fundamental and Applications Code Storage Devices • • • • • Floppy Disks Compact Disks (CD) Hard Disk Digital versatile Disk (DVD) Flash Disk D.Balaganesh Lincoln University College Credit Hours
  • 18. Subject Name Internet Fundamental and Applications Code Credit Hours Comparing Types of Memory Storage Devices • Sometimes storage is a trade off between speed, capacity, price and reliability. D.Balaganesh Lincoln University College
  • 19. Subject Name Internet Fundamental and Applications Code Credit Hours Hardware and Software • Hardware: The term hardware refers to the physical components of you computer such as the computer screen, mouse, keyboard etc… • Software: Computer software is the key to productive use of computers. D.Balaganesh Lincoln University College
  • 20. Subject Name Internet Fundamental and Applications Code Types of Software D.Balaganesh Lincoln University College Credit Hours
  • 21. Subject Name Internet Fundamental and Applications Code Credit Hours Software • The computer hardware on its own has no intelligence and therefore must be supplied with instructions to perform any task. • Software or programs, consist of step-by-step instructions that tell the computer how to perform a task. • Software is divided into two main categories: – system software and – application software. D.Balaganesh Lincoln University College
  • 22. Subject Name Internet Fundamental and Applications Code Types of Software •Operating System Software. •Application Software. D.Balaganesh Lincoln University College Credit Hours
  • 23. Subject Name Internet Fundamental and Applications Code Operating System Software • It is a program that controls the computer and enables it to run application software. • It allows the computer to manage its internal resources. • The software runs the basic computer operations – it tells the hardware what to do, how to do it, andD.Balaganesh Lincoln University College when Credit Hours
  • 24. Subject Name Internet Fundamental and Applications Code Operating System Software • Examples of Operating system software:  Windows XP  Windows Vista D.Balaganesh Lincoln University College Credit Hours
  • 25. Subject Name Internet Fundamental and Applications Code Credit Hours Application Software Consists of programs that tell a computer how to produce information. Some of the more commonly used packages are:  Word processing.  Electronic spreadsheet.  Presentation. D.Balaganesh Lincoln University College
  • 26. Subject Name Internet Fundamental and Applications Code Credit Hours Application Software • This is software that help the user carry out specific task such as word-processing, spreadsheet, databases and presentation software. • Application fall under two styles – Tailor-made: software designed for the particular customer. – Off-the-shelf: for use by the general public D.Balaganesh Lincoln University College
  • 27. Subject Name Internet Fundamental and Applications Code Credit Hours Application Software • MS Word ( Word Processing ):  Word Processing software is used to create and print documents • Spreadsheet ( MS Excel ) Electronic spreadsheet software allows the user to add, subtract, and perform userdefined calculations on rows and columns of numbers. These numbers can be changed and D.Balaganesh Lincoln University College
  • 28. Subject Name Internet Fundamental and Applications Code Credit Hours MS Powerpoint ( Presentation) • MS Powerpoint allows the user to create documents called slides to be used in making the presentation. D.Balaganesh Lincoln University College