16. The basic components of a modern digital computer are :

A. Input device
B. Output device
C. Central processor
D. All of the above
E. None of the above

17. What does that acronym EGA stand for?

A. Enhanced Graphics Array
B. Extended Graphics Array
C. Monochrome Graphics Adapter
D. Enhanced Graphics Adapter
E. Extended Graphics Adapter

18. A beam of light used to record and retrieve data on optical disks is known as

A. polarized light
B. unpolarized concentric light
C. laser
D. coloured light
E. None of the above

19. Punched-card equipment was first introduced in Britain in 1904 by a small company. What was the name of that company?

A. The Tabulator Ltd.
B. Tabulator Machine Company
C. International Business Machines (IBM)
D. Accounting & Tabulating Corpn. of Great Britain
E. None of the above

20. The computer translates the condition of each switch to a number. What number is represented by the ON state?

A. +7
B. +3.75
C. 1
D. 0
E. 22