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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

You can do it
  1. Which of the following is not a class based on size?
  2. Which was the computer conceived by Babbage?
  3. A program that performs a useful task while simultaneously allowing destructive acts is
  4. Which of the following are the two main components of the CPU?
  5. The silicon chips used for data processing are called
  6. FORTRAN is
  7. To prevent the loss of data during power failures, use a(n):
  8. Any device that performs signal conversion is
  9. The average time necessary for the correct sector of a disk to arrive at the read write head is _____
  10. _______ computers are also called personal computers
  11. UNIVAC was a first generation computer. What is its full form?
  12. What is the date when Babbage conceived Analytical engine
  13. In a computer_____ is capable to store single binary bit.
  14. An operating system intended for use on microprocessor based systems that support a single user is
  15. Which of the following memories need refresh?
  16. Any storage device added to a computer beyond the immediately usable main storage is known as
  17. The two kinds of main memory are:
  18. Magnetic disk is an example of
  19. Machine language is
  20. Abacus was the first
  21. Each model of a computer has a unique
  22. For what Antikyathera was used?
  23. Which of the following is the largest unit?
  24. When a computer is switched on, the booting process performs
  25. The full form of ALU is
  26. A hard copy would be prepared on a
  27. EBCDIC stands for
  28. The device used to carry digital data on analogue lines is called as
  29. The basic operations performed by a computer are
  30. Which of the following computer language is used for artificial intelligence?