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WorksheetsDigital Integrated Circuits Quiz
Total questions: 32
Worksheet time: 16mins
How are Digital Integrated Circuits generally classified?
By power consumption only
By operating principle and technology (TTL, CMOS, ECL, etc.)
By AC and DC input
By illumination
By temperature range
What technology are TTL (Transistor-Transistor Logic) Integrated Circuits based on?
Bipolar transistors
MOSFET transistors
Diac and triac
Photodiodes
Thermistors
Why is the conventional graphic designation of digital ICs used?
To measure AC voltage
To show the structure of electronic circuits in a simple and understandable way
To create a light signal
To increase the signal strength
To measure current
The following are not included in the basic parameters of integrated circuits:
Amplification coefficient
Input and output resistances
Maximum current and voltage
The output of an OR gate is “1” if:
Both inputs are “1”
Both inputs are “0”
At least one input is “1”
The inputs are different
The inputs are the same
What is the function of a NOT gate?
It increases the input signal
It passes the input unchanged to the output
It inverts the logic value of the input
It adds the inputs
It multiplies the inputs
When is the output of an XOR gate “1”?
When the inputs are the same
When the inputs are different
Only the first input is “1”
Only the second input is “1”
When both inputs are “1”
When is the output of a NAND gate “0” only?
When both inputs are “1”
When both inputs are “0”
When one input is “1” and the other is “0”
When one input is “0” and the other is “1”
When does an XOR gate output a "1"?
When both inputs are "1"
When both inputs are "0"
When the inputs are different
Only the first input is "1"
Only the second input is "1"
How is the logic equation of an XOR gate for inputs A and B written?
A + B
AB
A’B + AB’
(A + B)’
A’ + B
What is the equation of a NAND gate for inputs A and B?
(AB)’
A + B
A’ + B’
AB’
(A + B)’
The equation of a NOR gate for inputs A and B is:
(AB)’
(A + B)’
A’ + B
A + B’
What are the universal gates that are sufficient to implement any logic function?
AND and OR
OR and XOR
NAND and NOR
AND and XOR
OR and NOT
Which gate gives only “1” when both inputs are “0”?
OR
NOR
NOT
XOR
AND
What will be the output of the NAND gate for A=1, B=0?
0
1
A
B
Unknown
Which gate expresses the logic A’B+B’A?
AND
OR
XOR
NAND
NOR
What is the main feature of combinational digital devices?
It gives an output according to the past state
It gives an output only according to the input signal, there is no memory element
It amplifies the signal
It converts AC to DC
It requires mechanical movement
What is the function of an encoder?
It converts a 10-digit number into a binary code
It converts the output code into an input code
It amplifies the signal
It stabilizes the AC voltage
It acts as a memory element
What does a decoder do?
It converts AC to DC
It converts the binary code into a 10-digit code at the output
It increases the power of the signal
It is a combination of a capacitor and an inductor
It stores memory
What is the purpose of a code converter?
Convert the input code to another code system
Increase the amplitude of the signal
Convert AC voltage to DC
For memory only
Reduce physical size
What does a multiplexer (MUX) do?
Directs one of several inputs to an output
Divides the output line into several inputs
Amplifies the signal
Converts AC voltage to DC
Performs capacitor filtering
What function does a demultiplexer (DEMUX) perform?
Divides one input signal into several output lines
Directs the output signal to one input
Converts AC to DC
Amplifies the signal
Performs code conversion
What is the main function of an adder?
Adds two or more digits and outputs an output
Simplifies the signal
Converts AC to DC
Divides the signal into multiple outputs
What is a digital comparator used for?
Compares input numbers and displays the result at the output
Converts AC to DC
Increases the signal amplitude
Transcodes
Stores the signal in memory
What is the number of outputs of a multiplexer?
Always 2
The output is usually 1 line
Always equal to the number of inputs
Always 4
There is no output line
What is the main feature of sequential digital devices?
It gives an output only according to the input signal
It gives an output according to the previous state (memory)
It increases the signal strength
It converts AC to DC
It requires mechanical movement
What is a Flip-Flop (trigger) used for?
To amplify a signal
As a one-bit memory element, to store information
To stabilize AC voltage
For code conversion
For lighting
What are the main inputs of an RS trigger?
Input and output
Reset (R) and Set (S)
Collector and emitter
Anode and cathode
Clock and data
What is the feature of a D-type trigger?
It has a Set and Reset function
It transfers the information at the input to the output on the rising edge of the clock signal
The output is always 0
It is used only for AC signals
It converts code
What is a register?
A device that only converts the input signal to DC
A sequential device consisting of several triggers
Stabilizes the AC signal
It converts code
What function does a pulse counter perform?
Stabilizes the signal
Counts the input pulses and displays the result in binary or other code
Converts AC to DC
Performs a code conversion function
Amplifies the signal
How does a frequency divider work?
Increases the input frequency
Divides the input frequency by a certain n and produces an output
Increases the amplitude of the signal
Converts AC to DC
Stores memory
