1. Sabheeta Academy of Computer Science & Information Technology, Hingorja What is Computer?

2. Sabheeta Academy of Computer Science & Information Technology, Hingorja Defination: Computer is an electronic machine which accepts data from user and after processing gives us output. It performs two major functions, the Processing and Logical Decision Making.

3. Sabheeta Academy of Computer Science & Information Technology, Hingorja Points: Electronic Machine Accept Data Processing Decision Making Output

4. Sabheeta Academy of Computer Science & Information Technology, Hingorja Features of Computer? Speed Storage Accuracy Reliability Diligence Versatility

5. Sabheeta Academy of Computer Science & Information Technology, Hingorja Parts of Computer?

6. Sabheeta Academy of Computer Science & Information Technology, Hingorja Four Essential Parts of Computer

7. Sabheeta Academy of Computer Science & Information Technology, Hingorja Basic Function of a Computer?????? Input Processing Output We give our input with the help of input devices Computer return our results through output devices.

8. Sabheeta Academy of Computer Science & Information Technology, Hingorja Input Devices? Keyboard Mouse Scanner Micro Phone Digital Camera Joystick Track Ball Touch Pad Light Pen

9. Sabheeta Academy of Computer Science & Information Technology, Hingorja Keyboard??

10. Sabheeta Academy of Computer Science & Information Technology, Hingorja Keyboard It is an input device through which we give our data & instructions to computer by pressing its buttons, it has various type of keys. Alphabetical Keys ( A to Z) Numerical Keys (0 to 9) Functional Keys (F1 to F12) Special Functional Keys (Alt, CTRL, Enter, Arrow) etc

11. Sabheeta Academy of Computer Science & Information Technology, Hingorja Mouse?

12. Sabheeta Academy of Computer Science & Information Technology, Hingorja Mouse: It is an Input Devices Through which we give our Instructions to computer by clicking its buttons (Left & Right), it also perform the dragging (Dreg & Drop)

13. Sabheeta Academy of Computer Science & Information Technology, Hingorja Scanner??

14. Sabheeta Academy of Computer Science & Information Technology, Hingorja Scanner: It is an input Device through which we convert our hard copy document into soft copy document, It means we can insert our printed data into computer with the help of a Scanner.

15. Sabheeta Academy of Computer Science & Information Technology, Hingorja Micro Phone

16. Sabheeta Academy of Computer Science & Information Technology, Hingorja Micro Phone: It is an input Device through which we record our sound in computer.

17. Sabheeta Academy of Computer Science & Information Technology, Hingorja Digital Camera

18. Sabheeta Academy of Computer Science & Information Technology, Hingorja Digital Camera It is an input device through which we capture our pictures and than insert & edit in computer.

19. Sabheeta Academy of Computer Science & Information Technology, Hingorja Track Ball

20. Sabheeta Academy of Computer Science & Information Technology, Hingorja Track Ball It is also an input device which is used on behalf of a mouse and perform same functions of a mouse, but used in Micro computers.

21. Sabheeta Academy of Computer Science & Information Technology, Hingorja Touch Pad

22. Sabheeta Academy of Computer Science & Information Technology, Hingorja Touch Pad In Portable computers like Laptop Computer we use touch pad on behalf of a mouse, we move our finger on it to move the cursor.

23. Sabheeta Academy of Computer Science & Information Technology, Hingorja Light Pen

24. Sabheeta Academy of Computer Science & Information Technology, Hingorja Light Pen It is used to write on the screen, in Touch Screen Monitors we use Light Pen to write some thing on behalf of a Keyboard.

25. Sabheeta Academy of Computer Science & Information Technology, Hingorja Joystick

26. Sabheeta Academy of Computer Science & Information Technology, Hingorja Joystick It is a gaming device which we connect with our Computer to play any game, through Joystick we give instructions in playing games, that’s why it is also an input device.

27. Sabheeta Academy of Computer Science & Information Technology, Hingorja Output devices Through Output devices computer Communicate with its user. The Devices through which we see results, or we get some thing in return of given data.

28. Sabheeta Academy of Computer Science & Information Technology, Hingorja Output Devices? Monitor Printer Speakers

29. Sabheeta Academy of Computer Science & Information Technology, Hingorja Monitor/LCD (Liquid Crystal Display)

30. Sabheeta Academy of Computer Science & Information Technology, Hingorja Monitor It is an output device which display results on the screen, it is a soft copy output device shows the activities on screen which a computer is performing.

31. Sabheeta Academy of Computer Science & Information Technology, Hingorja Printer

32. Sabheeta Academy of Computer Science & Information Technology, Hingorja Printer It is a hard copy output device which print our data permanently on the paper. We can print any application, letter, CV or any other document on the paper with the help of a printer.

33. Sabheeta Academy of Computer Science & Information Technology, Hingorja Speakers

34. Sabheeta Academy of Computer Science & Information Technology, Hingorja Speakers Speakers are also output device because when we play any music file they start producing sound.

35. Sabheeta Academy of Computer Science & Information Technology, Hingorja What’s Next?? It’s the PROCESSING

36. Sabheeta Academy of Computer Science & Information Technology, Hingorja Processing Input Data Interface bus Data Cache A.L.U F.P.U Registers Instructions Cache Instructions decoder C.U Output M.U 1. A.L.U= Arithmetic & Logical Unit 2. F.P.U= Floating Point Unit 3. C.U= Control Unit 4. M.U Memory Unit

37. Sabheeta Academy of Computer Science & Information Technology, Hingorja Types of Computer Analog Digital Hybrid

38. Sabheeta Academy of Computer Science & Information Technology, Hingorja Analog Computer An analog computer is a form of computer that uses the continuously-changeable aspects of physical phenomena such as electrical, mechanical or hydraulic quantities to model the problem being solved.

39. Sabheeta Academy of Computer Science & Information Technology, Hingorja Digital Computers A computer that performs calculations and logical operations with quantities represented as digits, usually in the binary number system.

40. Sabheeta Academy of Computer Science & Information Technology, Hingorja Hybrid Computers Hybrid computers are computers that contain features of analog computers and digital computers. The digital component normally serves as the controller and provides logical operations, while the analog component normally serves as a solver of differential equations.

41. Sabheeta Academy of Computer Science & Information Technology, Hingorja Classification of Computers According to their Size Super Computer Mainframe Computer Mini/Server Computers Micro Computers 1. Personal Computer 2. Workstation Computer Portable Computers 1. Laptop 2. Wearable 3. Palmtop OR PDA

42. Sabheeta Academy of Computer Science & Information Technology, Hingorja Super Computer

43. Sabheeta Academy of Computer Science & Information Technology, Hingorja Supercomputers are very fast in speed & are used for highly calculation tasks such as problems involving quantum physics, weather forecasting, climate research, molecular modeling (computing the structures and properties of chemical compounds, biological macromolecules and research into Nuclear weapons.

44. Sabheeta Academy of Computer Science & Information Technology, Hingorja Mainframe Computers

45. Sabheeta Academy of Computer Science & Information Technology, Hingorja Mainframe Computer Mainframe Computers are multi-user & powerful computers used mainly by large organizations for critical applications, huge data processing. such as census, industry and consumer statistics, enterprise resource planning, and financial transaction processing. It works continuously and mostly used in Banking sector.

46. Sabheeta Academy of Computer Science & Information Technology, Hingorja Mini/Server Computers

47. Sabheeta Academy of Computer Science & Information Technology, Hingorja Mini/Server Computers According to size it is in mid-range between Mainframe Computer and a personal Computer, it is used for web browsing and web hosting. It is also a multi user computer.

48. Sabheeta Academy of Computer Science & Information Technology, Hingorja Personal computer Workstation Computer Personal computer (PC)

49. Sabheeta Academy of Computer Science & Information Technology, Hingorja Personal Computer A personal computer is any general- purpose computer whose size, capabilities, and original sales price make it useful for individuals, and which is operated directly by an end-user. It is used in homes, offices, schools, hospitals for documentation and mailing purpose.

50. Sabheeta Academy of Computer Science & Information Technology, Hingorja Workstation Computer workstations had offered higher performance than desktop computers, especially with respect to CPU and graphics, memory capacity and multitasking capability. They are optimized for the processing of different types of complex data such as 3D mechanical design, engineering simulation, animation and image processing.

51. Sabheeta Academy of Computer Science & Information Technology, Hingorja Portable Computers Laptop PDA/Palmtop Wearable

52. Sabheeta Academy of Computer Science & Information Technology, Hingorja Laptop Computers It is a small & portable computer involves the same features of a Personal Computer, but it is not a power hungry so it can be operated on rechargeable batteries. It include a display, a keyboard, a pointing device (a touchpad) and speakers into a single unit.

53. Sabheeta Academy of Computer Science & Information Technology, Hingorja Personal digital Assistant A personal digital assistant (PDA), also known as a palmtop computer, or personal data assistant, is a mobile device that functions as a personal information manager, it used to record a frequently repetitive data. Current PDAs often have the ability to connect to the Internet. Many PDAs employ touch screen technology.

54. Sabheeta Academy of Computer Science & Information Technology, Hingorja Wearable Computer Wearable computers are digital devices that are worn on the body. This type of wearable technology has been used in behavioral modeling, health monitoring systems and information technologies.