Q.1

What has happened to the advances in digital technologies over the past three decades?

  • Slowed down considerably
  • Continued to increase, but at a decreasing rate
  • Made excellent progress
  • Nothing short of phenomenal
Q.2

In a certain digital waveform, the period is four times the pulse width. The duty cycle is ________.

  • 0%
  • 25%
  • 50%
  • 100%
Q.3

A type of digital circuit technology that uses bipolar junction transistors is ________.

  • TTL
  • CMOS
  • LSI
  • NMOS
Q.4

How many unique symbols are used in the decimal number system?

  • One
  • Nine
  • Ten
  • Unlimited
Q.5

The manner in which a digital circuit responds to an input is the circuit's ________.

  • logic
  • wiring
  • inputs
  • outputs
Q.6

The set of instructions for a computer is called a(n) ________.

  • program
  • input
  • output
  • control unit
Q.7

A continually variable, proportional indicator is a(n) ________ representation.

  • decimal
  • digital
  • unconstitutional
  • analog
Q.8

In a typical digital system, Logic 0 is 0V–0.8V, and Logic 1 is ________.

  • 2–5V
  • 2.5–5V
  • 3.0–5.5V
  • 3.5–5.5V
Q.9

Digital systems have ________.

  • one state
  • two states
  • three states
  • four states
Q.10

The digit that changes most often when counting is called the ________.

  • LSB
  • LL Bean
  • LED
  • LCD
Q.11

A binary number can be converted to be viewed on a 7-segment display by a(n) ________.

  • decoder
  • encoder
  • multiplexer
  • magnitude comparator
Q.12

Other ________ are often used to interpret or represent binary quantities for the convenience of the people who work with and use these digital systems.

  • analog systems
  • digital systems
  • number systems
  • binary systems
Q.13

A(n)________ is not a functional unit of a computer.

  • input unit
  • memory unit
  • modem
  • control unit
Q.14

The controls on an oscilloscope that will help obtain a stable display are in the ________.

  • vertical section
  • horizontal section
  • trigger section
  • display section
Q.15

The control and arithmetic/logic units are often considered as one unit called the ________.

  • central processing unit
  • inputs and outputs
  • microcomputer
  • arithmetic/logic unit
Q.16

Once a signal is digitized, the information it contains does not ________ as it is processed.

  • complain
  • stiffen
  • compress
  • deteriorate
Q.17

Digital systems are called ________.

  • numbering systems
  • ADC systems
  • binary systems
  • logic systems
Q.18

Memory devices that use electronic latching circuits are called ________.

  • RAM
  • flip-flops
  • magnetic tape
  • DRAM
Q.19

The CPU contains all the circuitry for ________.

  • storing data
  • keeping track of time
  • fetching and interpreting instructions
  • Internet operations
Q.20

In a positive logic system, the HIGH level is usually represented by ________.

  • 0 V
  • +1 V
  • +5 V
  • +9 V
Q.21

The duty cycle of a square wave is ________.

  • 10%
  • 25%
  • 50%
  • 100%
Q.22

To determine which of two binary numbers is larger, you could use a(n) ________.

  • register
  • adder
  • encoder
  • magnitude comparator
Q.23

A microcontroller would not be used in a(n) ________.

  • VCR
  • automobile ignition system
  • antilock brakes
  • grandfather clock
Q.24

________ is the highest-value seven-bit binary number.

  • 128
  • 127
  • 126
  • 125
Q.25

The rise-time of a pulse is normally measured between the ________.

  • 0 and 100% level
  • 10% and 90% level
  • 30% and 70% level
  • 50% level on the leading edge to the 50% level on the trailing edge
Q.26

1/4 as a binary number would be ________.

  • 0.01
  • 0.11
  • 0.10
  • 0.00
Q.27

The invalid range for an input to TTL logic is from ________.

  • 0 to 0.8 V
  • 1.2 to 1.6 V
  • 0.8 to 2.0 V
  • 2.0 to 5.0 V
Q.28

A microprocessor that performs only specific, dedicated tasks is also called a ________.

  • microcontroller
  • calculator
  • laptop microrocmputer
  • workstation processor
Q.29

The decimal system is composed of ________ symbols.

  • 2
  • 8
  • 10
  • 16
Q.30

Demultiplexing is a logic function that ________.

  • determines which of several inputs is the greatest
  • switches logic from one input to any of several output lines
  • switches logic from several inputs onto one output line
  • converts a code from one form to another
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