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Which is considered a direct entry input device?

A. Optical scanner

B. Mouse and digitizer

C. Light pen

D. All of the above

You can do it
  1. ________ is computer software designed to operate the computer hardware and to provide platform for…
  2. Todays computer giant IBM was earlier known by different name which was changes in 1924. What was that…
  3. A kind of serial dot-matrix printer that forms characters with magnetically-charged ink sprayed dots…
  4. Which of the following statement is false?
  5. Which of the following is true?
  6. A pen shaped device which can sense light, and is used to point at spots on a video screen.
  7. All modern computer operate on
  8. When was the transistors invented?
  9. Which of the following registers is used to keep track of address of the memory location where the next…
  10. Central Processing Unit is combination of
  11. A common boundary between two systems is called
  12. What type of memory is not directly addressable by the CPU and requires special softw3are called EMS…
  13. A computer which CPU speed around 100 million instruction per second and with the word length of around…
  14. Which of the following are the best units of data on an external storage device?
  15. Chief component of first generation computer was
  16. A self replicating program, similar to a virus which was taken from a 1970s science fiction novel by…
  17. Which 8-bit chip was used in many of today's TRS-80 computers?
  18. The ALU of a computer responds to the commands coming from
  19. An input /output device at which data enters or leaves a computer system is
  20. Word length of a Personal Computer is ___
  21. A computer cannot 'boot' if it does not have the
  22. Which number system is usually followed in a typical 32-bit computer?
  23. An optical input device that interprets pencil marks on paper media is
  24. Which of the following is not an input device?
  25. What was the name of the first commercially available microprocessor chip?
  26. A computer program that converts an entire program into machine language at one time is called a/ an
  27. Which term is used to describe RAM?
  28. What are the three decisions making operations performed by the ALU of a computer?
  29. Which of the following is not input unit device?
  30. The notable features like keyboards, monitors, GUI were developed in