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Question-1. Define keyboard?
Answer-1: These are most common used input devices today which allow data entry into a system by processing a set of keys, connected to the computer system. The most popular keyboard is a 101 keys keyboard.
Question-2. Define plotters?
Answer-2: Plotters are ideal output devices for architects, engineer, city planners, and others who need to routinely generate high precision hard copy graphic output widely varying sizes.
Question-3. Define printers?
Answer-3: Printers are the most commonly used output device producing hardcopy output.
Question-4. Define trackball?
Answer-4: A track ball is a device very similar to mouse. In track ball, the ball is placed on the top along with buttons where in mouse the ball is present in the base of mouse. To move the gripper?s cursor around the screen the ball is rolled with the finger.
Question-5. what are the input devices are available today?
Answer-5: Several input devices are available today. Some of them are:
1.Keyboard
2. Mouse
3. Trackball
4. Joystick
5. Electric pen
6. Scanner
7. Voice recognition devices etc.
Question-6. what are the output devices are available today?
Answer-6: several output devices are available today. Some of them are:
1. Moniters
2. Printers
3. Plotters
4. Lcd. (liquid crystal display)
Question-7. what are the printers available today?
Answer-7: several input devices are available today. Some of them are:
1. Dot matrix printer
2. Inkjet printer
3. Drum printer
4. Laser printer
5. Chain/Band printer
Question-8. what is an input devices?
Answer-8: An input device is an electromechanical device that accepts data from the outside world; translate them into a form such as a computer can interpret to that.
Question-9. what is an output device?
Answer-9: An output device is an electromechanical device, which accepts data from a computer and transfers them into a form, which is suitable for use by the outside world.
Question-10. what is the difference between track ball and mouse?
Answer-10: A track ball requires less space, than a mouse because the whole device is not moved for moving the graphics cursor.
Question-11. Describe Note-pad Keys?
Answer-11: To enter text in notepad, just type current cursor position is known by the insertion point which moves as we type. Type a set of small lines.
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