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C O M P U T E R

C O M P U T E R

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C O M P U T E R

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  1. COMPUTER

  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

  16. HARDWARE

  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.

  18. ALU INPUT OUTPUT CU MEMORY

  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.

  45. ABOUT WINDOWS

  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.