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42 questions
A combinational circuit can be specified with a ____ that list the output values for each combination of input variables.
State Table
Truth Tables
State Diagram
Truth Diagram
Logic Circuits in a DIGITAL SYSTEM is ____ and ____
A combinational circuit consisting of logic gates, whose outputs at any time are determined from the present combination of_____?
circuits
decoders
bytes
inputs
A ____ for a combinational circuit consists of input columns and output columns.
(all small letters, two words, singular)
A combinational circuit also can be described by a Boolean function one for each ______ variable.
Byte
Output
Binary
Input
One that performs the addition of 3-bits (2 signification bits and a previous carry) is a ___?
Data Selector
Half Adder
Full Adder
Multiplexer
A diagram of a combinational circuit has logic gates with no ____ as or ____ elements. (2 answers)
Feedback
Memory
Comparator
Storage
Each input and output variable exists physically as an analog signal whose values are interpreted to a ____ signal. (one word, singular)
A combinational circuit performs operations that can be specified logically by a set of ______ function.
Bit
Binary
Boolean
Byte
The design of a combinational circuit starts from the specification of the design objective, and it will culminate in ____?
In a combinational logic circuit, we obtained the simplified Boolean function for each ____ as a function of each input variables. (one word, singular)
A combinational circuit that performs the addition of 2-bits is called ____.
Half Adder
Full Adder
Combinational Circuit
Logic Gate
In combinational logic circuits, the binary values for the outputs are determined from the inputs.
TRUE
FALSE
A combinational circuit does not perform the code conversion from one code to another code by means of logic gates.
TRUE
FALSE
We cannot combine an adder with a subtractor.
TRUE
FALSE
Is a carry propagate determines whether a carry into stage i will propagate into stage i + 1?
TRUE
FALSE
Half Adder needs how many binary outputs?
1
2
3
The simplified boolean functions for the 2 outputs can be obtained directly from the ____?
State Diagram
Combinational Circuit
Truth Table
State Table
Full Adder needs ____ binary outputs?
1
2
3
What is the solution to reduce propagation delay?
Utilize numerous circuits
Use more logic gates
Use faster logic gates
The Boolean function for each output carry is expressed in ____?
Sum of Product (SOP)
Product of Sum (POS)
A decimal adder required a minimum of 9 inputs and ____ outputs, since 4-bits are required.
A ___ is a combinational circuit that compares 2 numbers.
Encoder
Magnitude Comparator
Decoder
Multiplexer
The outcome of the comparison of a magnitude comparator is specified by a ____ binary variables.
(A=B, A=B, A<B)
(A>B, A=B, A=B)
(A>B, A=B, A<B)
(A<B, A=B, A>B)
The binary variable is a comparator that is A=B and is equal to 1, only if all parts of digits of the 2 numbers are ____ ? (one word, singular)
A ___ is a combinational circuit that converts binary information from N input lines to a maximum of 2^n unique output lines.
Encoder
Decoder
NAND Gate
Selector
It is a circuit that receives information from a single line and directs it to one of the 2^n possible output lines. (one word, singular)
The procedure for implementing a combinational circuit by means of a decoder and OR gates requires that the Boolean function of the circuit is expressed as a ____ ?
Sum of Product (SOP)
Product of Sum (POS)
A/An ____ is a digital circuit that performs the inverse operation of a decoder.
A ____ encoder is an encoder circuit that includes a priority function.
Boolean
Byte
Binary
Priority
The operation of ____ is such that if 2 or more inputs are equal to 1 at the same, the input having the highest priority will take precedents.
Boolean Encoder
Byte Encoder
Binary Encoder
Priority Encoder
A ____ is a combinational circuit that selects binary information from 1 of the many input lines and direct it to a single output. (one word, singular)
The selection of a particular input line is controlled by a set of ___ lines.
Input
Output
Selection
Circuit
A multiplexer is also called a ____, since it selects one of the many inputs and stirs the binary input to the output line.
Binary Encoder
Multiplexer Bin
Data Selector
Output Decoder
State Diagram
Multiplexer circuits can be combined with common ____ inputs to provide multiple bit selections logic. (one word, singular)
If we want a simpler Boolean expression, fewer logic gates are needed to implement the functions, what can be used?
(MULTIPLE Answers can be selected)
Algebra Simplification
K-Maps
Circuit Modifier
Tabulation Method
Polynomial Functions
As in decoder, multiplexers may have an ____ input to control the operation of the multiplexer. When this input is in an inactive state, the outputs are disabled.
(one word, singular)
The sum of product has ____ term for each bit 1.
1
2
3
____ can be used to implement a digital function.
Analogs
Binary Expressions
Truth Tables
Logic Gates
The basic building block of combinational logic is the ____.
A ___ is a combinational circuit with a number of output lines, only one of which is asserted at anytime.
Encoder
Decoder
Multiplexer (MUX)
Full Adder
A multiplexer are used in digital circuits to control signal and data routing.
TRUE
FALSE
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