What is a light pen?

A. A Mechanical Input device

B. Optical input device

C. Electronic input device

D. Optical output device

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. Which of the following is machine independence program?
  2. Which unit converts computer data into human readable form?
  3. Where as a computer mouse moves over the table surface, the trackball is
  4. RAM stands for
  5. Which programming language is based on Algol 60.
  6. The term gigabyte refers to
  7. What is the main difference between a mainframe and a super computer?
  8. Which of the following programming language started from second generation?
  9. Signals can be analog or digital and a computer that processes the both type of signals is known as
  10. A name or number used to identify a storage location is called
  11. The tracks on a disk which can be accessed without repositioning the R/W heads is
  12. CD-ROM stands for
  13. The primary function of the ________ is to set up the hardware and load and start an operating system
  14. All of the following are examples of real security and privacy risks EXCEPT
  15. When did John Napier develop logarithm?
  16. What is the date when Babbage conceived Analytical engine
  17. Which device of computer operation dispenses with the use of the keyboard?
  18. MAN stands for
  19. ______ computers are also called personal computers
  20. Which is not consisted in a processor
  21. Programs designed to perform specific tasks is known as
  22. The advantage of COM are its __ and __
  23. A modem is connected to
  24. Which access method is used for obtaining a record from a cassette tape?
  25. Chief component of first generation computer was
  26. Which of the following will happen when data is entered into a memory location?
  27. A term associated with the comparison of processing speeds of different computer system is:
  28. Current SIMMs have either or connectors (pins)
  29. Which of the following is used only for data entry and storage, and never for processing?
  30. What are the three decisions making operations performed by the ALU of a computer?