41. A hand-held device which reads marks or characters on paper by detecting photo-sensitivity is known as

A. Light pen
B. Optical-wand
C. Plotter
D. All of the above
E. None of the above

42. Tiny rings made of magnetic material that can be polarised to represent binary 1 or 0 is called

A. Magnetic core
B. Magnetic disk
C. Card punch
D. Floppy disk
E. None of the above

43. A computer program that instructs other programs to perform a particular type of operation is

A. System software
B. Application program
C. Compiler
D. Interpreter
E. None of the above

44. A hard copy would be prepared on a

A. Line printer
B. Dot matrix printer
C. Type writer terminal
D. Plotter
E. All of the above

45. Which was the world’s first minicomputer and when was it introduced?

A. PDP-1, 1958
B. 1MB System/36, 1960
C. PDP-11 1961
D. VAX 11/780, 1962
E. None of the above