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What is a light pen?

A. Mechanical Input device

B. Optical input device

C. Electronic input device

D. Optical output device

Correct Answer : B.


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  1. Which of the following is a programming language?
  2. Com in Latin is
  3. When did IBM introduce the 20286 based PC/AT?
  4. Integrated Circuits (ICs) are related to which generation of computers?
  5. The terminal device that functions as a cash register, computer terminal, and OCR reader is the:
  6. Which is another name for functional language?
  7. Which of the following computer language is used for artificial intelligence?
  8. Where as a computer mouse moves over the table surface, the trackball is
  9. Any storage device added to a computer beyond the immediately usable main storage is known as
  10. To locate a data item for storage is
  11. Pick the one that is used for logical operations or comparisons such as less than equal to or greater…
  12. Which of the following is not true?
  13. Intel corporation produces chips for which computers?
  14. A computer system that is old and perhaps not satisfactory is referred to as a(n)
  15. Which was the most popular first generation computer?
  16. The first firm to mass-market a microcomputer as a personal computer was
  17. Which of the following is an example of fifth generation computer?
  18. To move a copy of file from one computer to another over a communication channel is called?
  19. What does DMA stand for?
  20. A device, which is not connected to CPU, is called as ________
  21. The latest PC keyboards use a circuit that senses the movement by the change in its capacitance,
  22. Storage capacity of magnetic disk depends on
  23. The difference between memory and storage is that memory is ______ and storage is
  24. RAM stands for
  25. Which of the following is the largest unit?
  26. which of the following is problem oriented language?
  27. A program that converts computer data into some code system other than the normal one is known as
  28. Once you load the suitable program and provide required data, computer does not need human intervention.…
  29. ________printer is the cheapest in terms of price and operating cost
  30. Why are vacuum tubes also called valves?