1 / 15

Session - 1 Computer Fundamentals

Session - 1 Computer Fundamentals. A Desktop Machine. A Computer System. Hardware Software User. User. Software. Hardware. A Computer System (Contd.). In general, a computer is a machine which accepts data, processes it and returns new information as output. Processing . Data.

haruko
Télécharger la présentation

Session - 1 Computer Fundamentals

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Session - 1Computer Fundamentals

  2. A Desktop Machine

  3. A Computer System • Hardware • Software • User User Software Hardware

  4. A Computer System (Contd.) • In general, a computer is a machine which accepts data, processes it and returns new information as output. Processing Data Information

  5. Software • Software is set of programs (which are step by step instructions) telling the computer how to process data. • Software needs to be installed on a computer, usually from a CD. • Softwares can be divided into two groups: - System SW - Application SW

  6. Software (Contd.) System Software • It controls the overall operation of the system. • It is stored in the computer's memory and instructs the computer to load, store, and execute an application. • Examples: Operating System (OS), Translators DOS, Windows, Unix etc.

  7. Software (Contd..) Application Software • They are Softwares written to perform specific tasks. • The basic types of application software are: word processing, database, spreadsheet, desktop publishing, and communication. Examples: MSOffice, Tally, MSOutlook, ISBS, MODBANKER BANKSOFT

  8. Advantages of Using Computers • Speed:Computers can carry out instructions in less than a millionth of a second. • Accuracy : Computers can do the calculations without errors and very accurately. • Diligence :Computers are capable of performing any task given to them repetitively. • Storage Capacity :Computers can store large volume of data and information on magnetic media.

  9. History of Evolution Of Computers Two Eras: • Mechanical Era (Before 1945) • Electronic Era (1945 - ) Can be divided into generations. • First Generation (1945 – 1954) • Second Generation (1955 – 1964) • Third Generation (1965 – 1974) • Fourth Generation (1975 - )

  10. Types of Computers On the basis of Computing Power & Size: • Laptop / Palmtop • Micro Computer / Desktop • Mini Computer / Mainframe • Super Computer

  11. Language of Computers • Computers only understand the electronic signals. Either Current is flowing or not. • Current Flowing : ON • Current Not Flowing : OFF • Binary Language • ON : 1 • OFF : 0 • Bit, Byte, KB, MB, GB

  12. Computer Network • A Computer Network is interconnection of Computers to share resources. • Resources can be : Information, Load, Devices etc.

  13. Types Of Computer Networks On the basis of Size: • Local Area Network (LAN) Its a network of the computers locally i.e. in one room, one building. • Wide Area Network (WAN) Its a network of the computers spread widely geographically.

  14. Benefits of Computer Networks • Information Sharing • Device Sharing • Load Sharing • Mobility • Fast Communication • Anywhere Anytime Banking

  15. Internet • Internet is a huge network of computer networks. • Internet provides many services: • Email • World Wide Web (www) • Remote Login (Telnet) • File Transfer (FTP)

More Related