Exercise: Digital Electronics

Questions for: Digital Electronics

Race condition always arises in
A:
synchronous circuit
B:
asynchronous circuit
C:
combinational circuit
D:
digital circuit
Answer: B
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A 12 bit ADC is employed to convert an analog voltage of zero to 10 volts. The resolution of the ADC is
A:
2.44 mV
B:
24.4 mV
C:
83.3 mV
D:
1.2 V
Answer: A

Full scale measurement range = 0 to 10 volts.

ADC resolution is 12 bits: 2^12 = 4096 quantization levels.

ADC voltage resolution is: (10-0)/4096 = 0.00244 volts = 2.44 mV.

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Which device changes parallel data to serial data?
A:
Decoder
B:
Multiplexer
C:
Demultiplexer
D:
Flip flop
Answer: B
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Which of the following memory is preferred in case of calculators?
A:
Dynamic RAM
B:
Dynamic ROM
C:
Static ROM
D:
Static RAM
Answer: A
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In 8085 microprocessor, what is the memory word size?
A:
6 bits
B:
8 bits
C:
12 bits
D:
16 bits
Answer: A
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