21. Each model of a computer has a unique
A. Assembly language
B. Machine language
C. High level language
D. All of the above
E. None of the above
22. Transistorized computer circuits were introduced in the
A. first generation
B. second generation
C. thir4 generation
D. fourth generation
E. None of the above
23. Those microcomputers which have the same operating characteristics as the IBM microcomputers are called IBM
A. duplicates
B. clones
C. copies
D. look alikes
E. None of the above
24. Communication ports are found on the back of microcomputers. They are used to connect the computer to _____
A. printers
B. modems
C. other hardware
D. All of the above
E. None of the above
25. Which is considered a direct entry input device?
A. Optical scanner
B. Mouse
C. Light pen
D. Digitizer
E. All of the above