| 1 |
In light pen the sensing element is called. |
- A. Light cell
- B. Cell
- C. Photocell
- D. None
|
| 2 |
What does a light pe consist of |
- A. A laser beam at its base
- B. A sphericla ball at its lower end
- C. A photocell and an opticla system
- D. A microphone
|
| 3 |
What is a mouse in a computer system. |
- A. A joystic device
- B. A light pen device
- C. A microphne device
- D. A cursor -control device
|
| 4 |
What type of data can a magnetic field sensor record. |
- A. Magnetic field
- B. Motion
- C. Humidity
- D. Sound
|
| 5 |
What is the main purpose of a computer. |
- A. to process data and produce the desired information
- B. To save data
- C. To provide input
- D. To display output
|
| 6 |
All mathematicla opeations in computer are performed by. |
- A. Memory unit
- B. Control Unit
- C. Arithmetic unit
- D. Storage unit
|
| 7 |
Which of the following is not part of CPU |
|
| 8 |
What is the final result of data processing referred to as. |
- A. Input
- B. Processing
- C. Output
- D. Storage
|
| 9 |
Which of the following is not an input device. |
- A. Keyboard
- B. Speaker
- C. Mouse
- D. <div>Scanner</div>
|
| 10 |
What is a joystick in a computer system. |
- A. A cursor contol device
- B. A stick used to move the cursor position
- C. A pen used to select a menu item
- D. A device used to imput sound into the computer
|
