Where as a computer mouse moves over the table surface, the trackball is

A. Stationary

B. Difficult to move

C. Dragged

D. Moved in small steps

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

You can do it
  1. The earliest calculating devices are
  2. A path by which communication is achieved between a central processor and other devices is called
  3. Computer professionals working in a computer centre are
  4. The two major types of computer chips are
  5. The technology that stores only the essential instructions on a microprocessor chip and thus enhances…
  6. The purpose of vacuum tube was to NOT act like
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  8. One of the popular mass storage device is CD ROM. What does CD ROM stand for?
  9. Computer is free from tiresome and boardoom. We call it
  10. The brain of any computer system is
  11. ________ computers operate essentially by counting
  12. ________ Is the functional key to display Save-As box.
  13. LSI, VLSI & ULSI chips were used in which generation?
  14. One millisecond is
  15. A state. is a bi-stable electronic circuit that has
  16. The Third Generation Computer was made with .
  17. which of the following is problem oriented language?
  18. WAN is a most used abbreviation in Networking, what is its full form?
  19. Which is a machine-oriented high-level language for the GEC 4080 series machines.
  20. Which access method is used for obtaining a record from a cassette tape?
  21. Which part interprets program instructions and initiate control operations.
  22. Which of the following is not electro-mechanical computer?
  23. Which type of computers uses the 8-bit code called EBCDIC?
  24. When was the X window system born?
  25. The binary system uses powers of
  26. The symbols used in an assembly language are
  27. Symbolic logic was discovered by
  28. The central processing unit (CPU) consists of
  29. Reusable optical storage will typically have the acronym-
  30. Which of the following machine was not invented by Charles Babbage?