INTRODUCTION TO COMPUTERS
- 1. Basic of Computers S. SURENTHIRAN Computer Instructor GHSS, Madhavalyam, Kanyakumari District
- 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 1) Speed 2) Accuracy 3) Diligence – Free from monotony, tiredness 4) Versatility 5) Storage Capacity 6) No I.Q 7) No Feeling
- 6. Computer Generation 1) First Generation (1942 – 1955) 2) 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 1) Digital Computers 2) Analog Computers 3) Hybrid Computers
- 9. Laptop
- 13. Input Devices 3) Light Pen
- 15. Input Devices 4) Touch Pad
- 16. Input Devices 5) MICR (Magnetic Ink Character Recognition)
- 17. Input Devices 6) Bar Coding
- 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 1) Primary Storage Device 1) ROM (Read Only Memory) 2) PROM (Programmabel ROM) 3) EPROM (Erasable PROM) 4) EEPROM (Electrically EPROM) 5) RAM 2) Secondary Storage Device 1) Floppy Disk (FDD) 2) Compact Disk (CD) 3) Hard Disk (HDD) RAM EPROM
- 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 1) Modem 2) Telephone Line 3) Subscription with Interest Service Provider (ISP) 4) Web Browser
- 41. Types of Modem 1) Internal Modem 2) External Modem
- 42. Web Browser Software Application used to locate and display the web page 1) Netscape Navigator 2) Internet Explorer 3) Fire Fox 4) 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: [email protected]
- 50. Parts Of A Message 1) From 2) To 3) Subject 4) CC 5) BCC 6) Message
- 51. MS-OFFICE
- 52. MS-OFFICE MS-OFFICE • MS-Word • MS-Excel • MS-PowerPoint • MS-Outlook Express
- 53. THANK YOU