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The effectiveness of a simulation depends on choosing input waveforms that will tell everything that needs to be known about the operation of a design
True
The electrical requirements for an LED circuit are simple
True
A digital decoder activates a specified output for a unique digital input code; an encoder operates in the reverse direction.
True
A demultiplexer performs the reverse function of a multiplexer
True
If a circuit is known to have been designed and built correctly, it still might fail due a failure of one or more of its components
True
A ____ is an array of seven independently controlled light-emitting diode (LED) or liquid crystal display (LCD) elements, shaped like a figure 8, which can be used to display decimal digits and other characters by turning on the appropriate elements
Seven-segment display
Decoder circuits often are constructed with multiple outputs; in effect, such a device is a collection of decoding gates controlled by the same _________
inputs
With regard to hex digits, to make _____ distinct from b, the former must be given a tail (segment a)
6
A _________ directs a single input signal to one of several outputs
demultiplexer
____________ is a naming convention where two or more numerically related groups of signals are named using two subscript numerals
double-subscript notation
What are the multiplexer inputs that feed a digital signal to the output when selected
Data inputs
______________determine whether one binary number is less than, greater than, or equal to another binary number
Magnitude comparators
An error-checking system that requires a binary number to have an even number of 1s is:
Even parity
________________ is the verification, using timing diagrams, of the logic of a digital design before programming it into a CPLD or an FPGA
Simulation
A _____ is a circuit with a 4-bit input for a BCD digit and seven outputs for segment selection
BCD to seven segment decoder
A(n) ___________ is a circuit that generates a binary code at its outputs in response to one or more active input lines
encoder
A diagram showing how two or more digital waveforms in a system relate to eachother overtime is a:
Timing diagram
The ripple blanking feature often included in a ________ allows for suppression of leading or trailing zeros in a multiple digit display, while allowing zeros to be displayed in the middle of the number
7 segment decoder
The general function of a ___________ is to activate one or more outputs when a specific set of values is applied to the circuit's inputs
decoder
A circuit that directs one of several digital signals to a single output, depending on the states of several select inputs, is a:
multiplexer
Simplest type of decoders
NAND, AND