Introduction to Digital Systems – Exercise – 2

51. What is the decimal value of 23 ?

(a) 2
(b) 4
(c) 6
(d) 8

52. What is an analog-to-digital converter?

(a) It makes digital signals.
(b) It takes analog signals and puts them in digital format.
(c) It allows the use of digital signals in everyday life.
(d) It stores information on a CD.

53. What kind of logic device or circuit is used to store information?

(a) Counter
(b) Register
(c) Inverter
(d) Buffer

54. Serial format means digital signals are:

(a) sent over many conductors simultaneously.
(b) sent over one conductor sequentially.
(c) sent in groups of eight signals.
(d) sent in binary coded decimal.

55. Digital signals transmitted on a single conductor (and a ground) must be transmitted in:

(a) slow speed.
(b) parallel.
(c) analog.
(d) serial.

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