Exercise: Digital Electronics

Questions for: Digital Electronics

Which of the following parameters is not specified for digital ICs?
A:
Gate dissipation
B:
Propagation delay
C:
Noise margin
D:
Bandwidth
Answer: D
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Start and stop bit do not contain any information but are used in serial communication for
A:
error correction
B:
error detection
C:
synchronization
D:
slowing down the communication
Answer: C
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The internal structure of PL A is similar to
A:
RAM
B:
ROM
C:
both RAM and ROM
D:
neither RAM nor ROM
Answer: D
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Without any addition circuitry, an 8:1 MUX can be used to obtain.
A:
some but not all Boolean functions of 3 variables
B:
all functions of 3 variables but none of 4 variables
C:
all functions of 3 variables and some but not all of 4 variables
D:
all functions of 4 variables
Answer: B
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Consider the following statements:
  1. In the 2's complement representation, negative numbers are stored in sign magnitude form.
  2. Taking 2's complement is equivalent to sign change.
  3. In a 4 bit complement representation of a binary number A.
  4. In the 2's complement representation the most significant bit (MSB) is zero for a positive number.
Of these, the only true statements are
A:
(I) and (III)
B:
(I) and (IV)
C:
(II) and (III)
D:
(II) and (IV)
Answer: D
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