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  2. COMPUTER Is an electronic device capable of performing its prescribed operation.

  3. Examples of Computer Laptop New model of computer VIOS Old Model of computer Flat Screen Computer

  4. DATA • Any collection of facts

  5. Forms of DATA • Numeric Data = (0 – 9) • Alphanumeric Data = (text data) • Graphic Elements • Physical Data = ex. Temperature, sound voice, light

  6. Data Processing • Is the manipulation of data into a more & useful form. • Modern name for paperwork.

  7. Information • The outcome of the process, also known as the processed data.

  8. Categories of DATA Processing

  9. Mechanical Data Processing • Data that processes manually. Ex. Typewriters sorters, calculators, collators, tabulators, duplicators, and verifiers

  10. Electronic DATA Processing • Data that process electronically which is used in storage. Ex. Computer

  11. Data Processing Cycle Input Process / Manipulate Output

  12. Data Processing Life Cycle • Input • Initial data or input data are prepared in some convenient form for processing • Processing • Input data are change, and usually combined with other information to produce data in more and useful form • Output • The results of the preceding processing steps are collected

  13. SYSTEM • Is a collection of elements or parts that work together as a point in order to solve specific problems.

  14. Basic components of computer

  15. Hardware Software People Ware


  17. Hardware • In its simplest form, a computer consist of five functionally independent main parts: Input, Memory, Arithmetic and Logic Unit (ALU), Control Unit (CU), & the Output Unit. As indicated in the figure 1.1.


  19. 5 Functionally Independent main parts of HARDWARE • Input • Memory • Arithmetic & Logic Unit (ALU) • Control Unit (CU) • Output Unit

  20. Functional Parts of HARDWARE

  21. Input Units • Accept coded information by means of input units or devices

  22. Central Processing Unit (CPU) • Brain of the computer that process data enter into the computer. • It is the parts of the computer that translate commands & run programs.

  23. Microprocessor • Is the center of the modern computer it is integrated circuit or microchip that contains the entire CPU of a Computer.

  24. Output Unit • Enables the computer to present information to the user.

  25. Memory Units / Storage Units (Primary & Secondary) • Is to store programs / data

  26. 2 types of Memory

  27. Primary Memory • You can store a program over a short period of time. If you turn off the computer, all the data’s stored will be LOST.

  28. Secondary Memory • You can store a program over a long period of time. Ex. cd, Flash Disk having 1Giga bytes

  29. Software

  30. Programming • It refers to the task of creating software.

  31. Three main categories of computer Software

  32. Programming Language Software • Used to create system and application program. • An artificial language used to define step-by-step instructions that can be processed and executed by the computer.

  33. System Software • Refers to the operating system and utility programs that manage computer resources. • Controls the standard activities or operations inside the computer and directs the computer how to operate its hardware resources.

  34. Application Software • Are the programs used to solve specific processing problems. • Are used in order to be productive & efficient in doing in the work in school, in the office, and in any business or personal transactions.

  35. People Ware

  36. People Ware • Responsible in developing the computer system. • Develops the system.

  37. 2 Classes of People Ware

  38. Technical User • One who design at the same time implement or carrying out the system.

  39. 5 Classes belong to Technical Users • System Analyst– analyses the problem of the program • Computer Programmer – makes the programs that man needs • System Engineer – developed the system • Application Developer – upgrades the system – add programs execute • Computer Technician – who repairs the computer

  40. End Users • Primary operations of the computer • Are the one who enters the date into the computers. Ex. Data encoder, computer operators, computer hobbyist, application user

  41. DOS(Disk Operating System)

  42. DOS(Disk Operating System) • An operating system with a collection of software programs that supervises the activities that takes place with in the computer, it also manage coordinates & in a sense brings life to the computer hardware. • Every computer must have operating system to control its basic input & output operations-DOS is said to be a command line interface (CU) software.

  43. “Working with DOS” • From its introduction in 1981 to the reface of DOS 6.2 . In 1993, DOS has established itself as the primary operation system for microcomputer.

  44. “The Command Live” • Most computer user, associate DOS with the command or DOS system prompt. Although some device users breakout is a cold sweat at the sight of a c/> prompt on the computer screen, this are many people who prefer the easy of typing command directly.


  46. Windows • Is an operating system that provides you a wide variety of information in a wide range of formats.

  47. Windows Graphical User Interface • Provides easy access to large volumes of sounds, graphics, multimedia information, & provides of platform for the development of even more sophisticated applications.

  48. What’s New in Windows? • Enhanced performance and reliability • Maintenance wizard • Multimedia support DVD digital audio and movies • Improved reliability on digital cameras and other digital imagining devices • A faster operating system • True Web integration • Object linking and imbedding • Support on –line website

  49. “USES OF WINDOWS” • It is easy to use with and supports media application. • Mouse movement help in selecting/moving items. • It helps the users to work with multi tasking environment.

  50. FEATURES OF WINDOWS • Window is a separate rectangular part of the screen identified by a border, that represents open objects and displays information. • Icon is a graphical representation of an application, a document, a folder, or a device. The 3 kinds of icons are PROGRAM ICON, GROUP ICON, APPLICATION ICON.