46. The hexadecimal number system is widely used in analyzing and programming ______

A. registers
B. chips
C. microprocessors
D. vacuum tube
E. None of the above

47. A combinational logic circuit which is used to send data coming from a single source to two or more separate destinations is called as

A. decoder
B. encoder
C. multiplexer
D. demultiplexer
E. None of the above

48. How many full and half-adders are required to add 16-bit numbers?

A. 8 half-adders, 8 full-adders
B. 1 half-adders, 15 full-adders
C. 16 half-adders, no full-adders
D. 4 half-adders, 12 full-adders
E. None of the above

49. An odd-parity generator produces an odd-parity bit to go along with the data. The parity of the transmitted data is _____ An XOR gate can test each received word for parity rejecting words with _____ parity.

A. odd, even
B. high, low
C. low, high
D. even, odd
E. None of the above

50. A gate is a logic circuit with one or more input signals but _____ output signal.

A. two
B. double
C. one
D. more than one
E. None of the above