3-23. Bipolar integrated circuits include all of the
following components except which one?
1. ECL
2. ALS
3. TTL
4. TTLC
3-24. Which of the following components is NOT a part
of a MOS integrated circuit?
1. DTL
2. TTLC
3. CMOS
4. HCMOS
3-25. In the determination of whether a computer’s logic
level is negative or positive, what is the
relationship of the two voltages?
1.
2.
3.
4.
They are relative to each other
They are independent of each other
They intermesh with each other
One is dominant; the other subordinate
IN ANSWERING QUESTIONS 3-26 THROUGH 3-28,
SELECT FROM THE FOLLOWING LIST THE TERM
DESCRIBED IN EACH QUESTION.
1. Pulse width
2. Pulse-repetition time
3. Pulse-duration modulation
4. Pulse-repetition frequency
3-26. The time period from a repeating waveshape’s
starting point until the next starting point.
3-27. The time interval between specified reference
points on the leading and trailing edges of a
waveform.
3-28. The number of times per second that a signal’s
complete cycle occurs.
GIVEN: A DIGITAL WAVESHAPE HAS
A PRT OF 25 µsec AND A NEGATIVE PW
OF 15 µsec.
Figure 3A.—Example statement.
IN ANSWERING QUESTIONS 3-29 AND 3-30,
REFER TO FIGURE 3A.
3-29. What is the value of the positive PW?
1. 6 µsec
2. 8 µsec
3. 10 µsec
4. 12 µsec
3-30. What is the value of the PRF?
1. 37 kHz
2. 40 kHz
3. 43.5 kHz
4. 47.5 kHz
3-31. What is the basic building block for combinational
digital circuits?
1. Diode
2. Capacitor
3. Flip-flop
4. Logic gate
3-32. What is the basic building block for sequential
circuits?
1. Resistor
2. Conductor
3. Flip-flop
4. Logic gate
3-33. Logic gates perform decision-making functions
throughout the computer.
1. True
2. False
3-34. Which of the following is another term for
flip-flops?
1. Unistable multivibrators only
2. Bistable multivibrators only
3. Tristable multivibrators only
4. Multivibrators
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