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OS, Ms-Office & Internet

OS, Ms-Office & Internet D. Kalidas Manager – Technical CSC Computer Education (P) Ltd Introduction To Computer What Is Computer ? It comes from the word “Compute” Difference Between A Computer & Calculator Father Of Computer Charles Babbage 1822 – Difference Engine

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OS, Ms-Office & Internet

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  1. OS, Ms-Office & Internet D. Kalidas Manager – Technical CSC Computer Education (P) Ltd

  2. Introduction To Computer What Is Computer ? It comes from the word “Compute” Difference Between A Computer & Calculator

  3. Father Of Computer Charles Babbage 1822 – Difference Engine 1842 – Analytical Engine

  4. Father Of Computer 1822 – Difference Engine 1842 – Analytical Engine

  5. Characteristics of Computer • Speed • Accuracy • Diligence – Free from monotony, tiredness • Versatility • Storage Capacity • No I.Q • No Feeling

  6. Computer Generation • First Generation (1942 – 1955) • Second Generation (1955 – 1964)

  7. Computer Generation • 3) Third Generation (1964 – 1975) • 4) Fourth Generation – SSI (Small Scale Integration) • - LSI (Large Scale Integration) • 5) Fifth Generation – Artificial Intelligence

  8. Classification of Computer • Digital Computers • Analog Computers • Hybrid Computers

  9. Laptop

  10. Basic Computer Operation

  11. Input Devices 1) Keyboard

  12. Input Devices 2) Joystick

  13. Input Devices 3) Light Pen

  14. Input Devices 4) Mouse

  15. Input Devices 4) Touch Pad

  16. Input Devices 5) MICR (Magnetic Ink Character Recognition)

  17. Input Devices 6) Bar Coding

  18. Input Devices 7) Scanner

  19. Input Devices 8) Digital Camera

  20. Output Devices 1) Monitor – CRT - LCD

  21. Output Devices 2) Printers - Daisy Wheel Printer - Line Printer

  22. Output Devices 2) Printers - Dot Matrix Printer

  23. Output Devices 2) Printers - Ink Jet Printer

  24. Output Devices 2) Printers - Laser Printer

  25. Storage Device • Primary Storage Device • ROM (Read Only Memory) • PROM (Programmabel ROM) • EPROM (Erasable PROM) • EEPROM (Electrically EPROM) • RAM • Secondary Storage Device • Floppy Disk (FDD) • Compact Disk (CD) • Hard Disk (HDD) EPROM RAM

  26. Secondary Storage Device • Floppy Disk (FDD)

  27. Secondary Storage Device • Hard Disk (HDD)

  28. Secondary Storage Device • CD Drive / DVD Drive

  29. Representing Characters In Memory 8 Bit - 1 Byte 1024 Bye - 1 Kilo Byte (KB) 1024 KB - 1 Mega Byte (MB) 1024 MB - 1 Giga Byte (GB) 1024 GB - 1 Tera Byte (TB)

  30. Hardware & Software Hardware – Physical Components of a computer Software – Set of Programs Or instruction Written By The Users

  31. Concept Of Operating System

  32. Operating System

  33. Concept Of Operating System • Optimizes man-machine capabilities • Integrated system of programs • Supervises operations of CPU • Controls Input / Output

  34. Inside The System Unit

  35. Inside The System Unit

  36. Computer Virus Computer virus is a program that is loaded onto your computer without your knowledge and runs against your wishes • Activities of Computer Virus? • It perform some activities like deleting files or disturbing your computer settings. • All computer viruses are man made. • A simple virus is dangerous because it will quickly use all available memory and bring the system to a halt.

  37. Internet

  38. Internet Internet stands for Interconnected Network – Connected Through Telephone Wires. The Internet, a network of networks, is popularly called the net.

  39. History of Internet 1969 – ARPANET (Advanced Research Projects Agency Network) 1980 – NSFNET (National Science Foundation NET)

  40. Requirement For Connecting To The Internet • Modem • Telephone Line • Subscription with Interest Service Provider (ISP) • Web Browser

  41. Types of Modem • Internal Modem • External Modem

  42. Web Browser • Software Application used to locate and display the web page • Netscape Navigator • Internet Explorer • Fire Fox • Mozilla

  43. Web Page A web page is a document on the Web. Web Pages can include text, pictures, sound and video.

  44. Web Site The website is a of one or more related web pages, linked together through a system of hyperlinking. A website is similar to a magazine

  45. Home Page First Page of information when the website is typed Typically contains introductory information about the website

  46. Hyperlink A hypertext document contains highlighted text that connects to other pages on the web. When the mouse pointer moved over a hypertext or hiperlink the shape of the cursor changes to a hand sysbol Example

  47. URL Uniform Resource Locator Each web page has a unique address called URL You can instantly display the webpage if we know the URL Example www.iteducationjobs.com www.rediffmail.com www.tn.nic.in www.gmail.com

  48. Search Engines A search engine is a program that searches through a collection of web pages for particular information Examples www.altavista.com www.altheweb.com www.google.com www.hobot.lycos.com www.infoseek.com

  49. Electronic Mail Exchange electronic mail (e-mail) with people around the world. E-Mail Address Username@domainname Eg: kalidas@iteducationjobs.com das@gmail.com kalidas_dk@rediffmail.com kalidas87@yahoo.co.in

  50. Parts Of A Message • From • To • Subject • CC • BCC • Message

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