31. A menu-driven operating system is one which allows you to pick up from the menu of choices it displays on the screen. What is the name given to the images which are used in such image oriented menus?

A. Icon
B. Figure
C. Symbol
D. option
E. None of the above

32. What is the name of the earliest calculating machine which was based on concepts found in modern computers but was unfortunately never built?

A. Babbage’s Difference Engine
B. Pascal’s Adder
C. Leibnitz’s Multiplier
D. Differential Analyser
E. None of the above

33. The first machine to successfully perform a long series of arithmetic and logical operations was:

A. ENIAC
B. Mark I
C. Analytic engine
D. UNIVAC-I
E. None of the above

34. Which is used for manufacturing chips?

A. Bus
B. Control unit
C. Semiconductors
D. (a) and (b) only
E. None of the above

35. The 0 and 1 in the binary numbering system are called binary digits or _____

A. bytes
B. kilobytes
C. decimal bytes
D. bits
E. nibbles