Digital Design - General Questions Online Exam Quiz
Digital Design - General Questions GK Quiz. Question and Answers related to Digital Design - General Questions. MCQ (Multiple Choice Questions with answers about Digital Design - General Questions
The ________ circuit overcomes the problem of switching caused by jitter on the inputs.
A : astable multivibrator
B : monostable multivibrator
C : bistable multivibrator
D : Schmitt trigger
Why would a delay gate be needed for a digital circuit?
A : A delay gate is never needed.
B : to provide for setup times
C : to provide for hold times
D : to provide for setup times and hold times
An optocoupler is an integrated circuit with an LED and a zener diode encased in the same package.
A : True
B : False
C : -
D : -
A Schmitt trigger has V T + = 2.0 V and V T – = 1.2 V. What is the hysteresis voltage of the Schmitt trigger?
A : 0.4 volt
B : 0.6 volt
C : 0.8 volt
D : 1.2 volts
Which of the following circuit parameters would be most likely to limit the maximum operating frequency of a flip-flop?
A : setup and hold time
B : clock pulse HIGH and LOW time
C : propagation delay time
D : clock transition time
A 0.01- F capacitor is recommended by TTL manufacturers for ________ the power supply.
A : decoupling
B : filtering
C : rectifying
D : grounding
Why does the data sheet for the 7476 only give a minimum value for the clock pulse width (both HIGH and LOW)?
A : nominal value
B : best-case condition
C : worst-case condition
D : -
Why is the Schmitt trigger needed in the 60-Hz TTL-level clock pulse generator?
A : to provide a triangle wave
B : to provide a sine wave
C : to provide a rounded pulse waveform
D : to provide a sharp pulse waveform
The main concern when using a pull-down resistor is:
A : the low power dissipation of the resistor
B : it will keep a floating terminal LOW
C : the high power dissipation of the resistor
D : it will cause false triggering
Look up the propagation delay from the clock to the output for the 7476. Are the HIGH-to-LOW and LOW-to-HIGH propagation delays the same?
A : yes
B : no, t PLH = 25 ns, t PHL = 40 ns
C : no, t PLH = 40 ns, t PHL = 25 ns
D : no, t PHL = 25 ns, t PLH = 40 ns
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