Q.1

Most of the input signals applied to a computer for storage or processing are digital in nature.

  • True
  • False
Q.2

Digitizing a signal converts it from digital to analog.

  • True
  • False
Q.3

The two basic types of signals are analog and:

  • digilog
  • digital
  • vetilog
  • sine wave
Q.4

A data conversion system may be used to interface a digital computer system to _________.

  • an analog output device
  • a digital output device
  • an analog input device
  • a digital printer
Q.5

The coded group of pulses in a digital electronic circuit consists of a series of HIGH and LOW voltages.

  • True
  • False
Q.6

The voltages in digital electronics are continuously variable.

  • True
  • False
Q.7

Which of the following characterizes an analog quantity?

  • Discrete levels represent changes in a quantity.
  • Its values follow a logarithmic response curve.
  • It can be described with a finite number of steps.
  • It has a continuous set of values over a given range.
Q.8

Sensor outputs destined for a digital computer system must first be processed by __________.

  • a DAC
  • an ADC
  • the MPU
  • a PLD
Q.9

In digital electronic circuits, information is first converted to a coded group of pulses.

  • True
  • False
Q.10

ASCII stands for:

  • American Serial Communication Interface
  • Additive Signal Coupling Interface
  • American Standard Code for Information Interchange
  • none of the above
Q.11

Digital systems using the 10-state system are more accurate than those using the two-state system.

  • True
  • False
Q.12

Which type of signal is represented by discrete values?

  • noisy signal
  • nonlinear
  • analog
  • digital
Q.13

The decimal code system used ten levels of voltage.

  • True
  • False
Q.14

A data conversion system may be used to interface a digital computer system to:

  • an analog output device
  • a digital output device
  • an analog input device
  • a digital printer
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