Computer a machine grade ii
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Computers are used in many aspects of modern life such as at home, school, work, research, entertainment, and more. They are used by students for projects, by teachers for lessons, by scientists for research, and in offices, libraries, hospitals, shops, and other businesses to store data, perform tasks, and keep records. Computers come in different forms like desktops, laptops, and tablets.
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The document introduces the basic parts of a computer, including input devices like the keyboard, mouse, and microphone, and output devices like the monitor, printer, and speakers. It defines each part and their functions, such as the keyboard being used to enter text and numbers, the mouse being a pointing device, the monitor displaying output, and the speakers producing sound. It also defines input and output devices, with input devices taking data into the computer and output devices displaying the processed results. Finally, it discusses why computers are important for their accuracy, speed, and ability to store large amounts of data and perform complex tasks.
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The document provides instructions for proper use of a computer keyboard. It discusses the layout of the typewriter keys, home row keys, and bottom row keys. It also describes the numeric keypad located on the right side of the keyboard, which can be used for typing numbers and includes special function keys. The objectives are to learn to use the keyboard properly and recognize the typewriter and numeric keypads.
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Computer a machine grade ii
- 4. Storage
- 5. Time
- 6. Accuracy
- 7. Work Process
- 10. Computers are used at home for playing games, listening to music, watching movies, drawing pictures, writing letters etc.
- 11. Computers are used in schools •By Teachers for Preparing lessons •Teaching different topics related to a subject •Preparing Reports Cards
- 12. Students use computers for preparing projects and learning different topics of a subject
- 13. Special effects can be created using a computer such as a sequence of a battle, an earthquake or a fire.
- 14. A number of satellites linked with computers provide a lot of information important for space research.
- 15. Computers are useful in defence services. Modern weapons and missiles are dependent on computers Computers help scientists in their research work. Computers help in making chemicals.
- 16. Computers are used in offices for storing data. Computers keep track of clients, members, sales, events and many more.
- 17. Computers are used in libraries to keep records of the books by entering data
- 18. Computerized equipment are used for medical tests and surgeries in hospitals.
- 19. Computers are used in booking counters where each computer is connected through a common network Computers help in reservation and cancellation of tickets. Computers help in keeping records of flights arrival and departures
- 20. Computers are used in banks for online enquiry of customer’s balance, cheque verification, updating the balance. Computers help you draw cash from ATM.
- 21. Computers help doctors in diagnosing many diseases. Computers help doctors in performing operation and medical tests. Computers help in keeping records of all the patients in a hospitals
- 22. Shopkeepers use computers to prepare bills for customers. Computers maintain record of the stocks and prices of different items.
- 23. Computers help architects in designing buildings and houses. Computers help engineers in designing cars, aeroplanes and many others machines. Computers help in designing clothes.
- 24. Types of computer: 1.Desktop computer
- 25. Types of computer: 2.Laptop computer
- 26. Types of computer: 3. Tablet computer