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Digital Computer Electronics
Comments
Question
The output 0 and 1 levels for TTL logic family is approximately
Options
A. 0.1 and 5 V
B. 0.6 and 3.5 V
C. 0.9 and 1.75V
D. -1.75 and -0.9 V
E. None of the above
Correct Answer
0.6 and 3.5 V
Digital Computer Electronics problems
Search Results
1. _____dominates the LSI field, and _____ is used extensively where lowest power consumption is necessary.
Options
A. NMOS, PMOS
B. PMOS, CMOS
C. NMOS, CMOS
D. MOSFET, PMOS
E. None of the above
Show Answer
Scratch Pad
Discuss
Correct Answer: NMOS, CMOS
2. Conversion of binary number 101101
2
to hexadecimal is
Options
A. 37
16
B. 2D
16
C. 2E
16
D. 27
16
E. None of the above
Show Answer
Scratch Pad
Discuss
Correct Answer: 2D
16
3. A diagram that illustrates the ore (Logic) of functions in a progran called a
Options
A. Flowchart
B. Sequence of steps
C. Direction of flow
D. All of the above
E. None of the above
Show Answer
Scratch Pad
Discuss
Correct Answer: Flowchart
4. The Gray code for decimal 7 is
Options
A. 0111
B. 1011
C. 0100
D. 0101
E. None of the above
Show Answer
Scratch Pad
Discuss
Correct Answer: 0100
5. A p- channel enhancement type MOSFET performs much the same function as a PNP transistor, except that
Options
A. it operates much faster
B. it is considerably larger
C. it is controlled by voltage rather than by current, so that it requires very little current at the control terminal
D. it is controlled by current rather than by voltage like a bipolar transistor.
E. None of the above
Show Answer
Scratch Pad
Discuss
Correct Answer: it is controlled by voltage rather than by current, so that it requires very little current at the control terminal
6. Address 200H contains the byte 3FH. What is the decimal equivalent of 3FH
Options
A. 63
B. 32
C. 16
D. 38
E. None of the above
Show Answer
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Discuss
Correct Answer: 63
7. The inverter OR gate and AND gate are called decision-making elements because they can recognize some input _____ while disregarding others. A gate recognizes a word when its output is _____
Options
A. words, high
B. bytes, low
C. bytes, high
D. character, low
E. None of the above
Show Answer
Scratch Pad
Discuss
Correct Answer: words, high
8. What logic function is produced by adding an inverter to each input and the output of an AND gate?
Options
A. NAND
B. NOR
C. OR
D. XOR
E. None of the above
Show Answer
Scratch Pad
Discuss
Correct Answer: OR
9. Which of the following logic families has the highest noise immunity?
Options
A. RTL
B. DTL
C. TTL
D. HTL
E. None of the above
Show Answer
Scratch Pad
Discuss
Correct Answer: HTL
10. In which code the successive code characters differ in only one bit position?
Options
A. gray code
B. excess 3 code
C. 8421 code
D. algebraic code
E. None of the above
Show Answer
Scratch Pad
Discuss
Correct Answer: gray code
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