A 22-MHz clock signal is put into a MOD-16 counter. What is the frequency of the

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Question
A 22-MHz clock signal is put into a MOD-16 counter. What is the frequency of the Q output of each stage of the counter?
Options
A. Q₁ = 22 MHz, Q₂ = 11 MHz, Q₃ = 5.5 MHz, Q₄ = 2.75 MHz
B. Q₁ = 11 MHz, Q₂ = 5.5 MHz, Q₃ = 2.75 MHz, Q₄ = 1.375 MHz
C. Q₁ = 11 MHz, Q₂ = 11 MHz, Q₃ = 11 MHz, Q₄ = 11 MHz
D. Q₁ = 22 MHz, Q₂ = 22 MHz, Q₃ = 22 MHz, Q₄ = 22 MHz

Correct Answer

Q₁ = 11 MHz, Q₂ = 5.5 MHz, Q₃ = 2.75 MHz, Q₄ = 1.375 MHz

More questions

1. Refer to the given figures (a) and (b). A logic analyzer is used to check the circuit in figure (a) and displays the waveforms shown in figure (b). The actual analyzer display shows all four data outputs, Q0-Q3. The analyzer's cursor is placed at position X and all four of the data output lines show a LOW level output. What is wrong, if anything, with the circuit?
Options
A. Nothing is wrong, according to the display. The outputs are in the open state and should show zero output voltage.
B. The circuit is in the READ mode and the outputs, Q0-Q3, should reflect the contents of the memory at that address. The chip is defective; replace the chip.
C. The circuit is in the mode and should be writing the contents of the selected address to Q0?Q3.
D. The Q0?Q3 lines can be either LOW or HIGH, since the chip is in the tristate mode in which case their level is unpredictable.

2. Refer the given figure. The outputs (Q0?Q3) of the memory are always LOW. The address lines (A0?A7) are checked with a logic probe and all are indicating pulse activity, except for A3, which shows a constant HIGH, and A7, which shows a constant LOW; the select lines, are checked and shows pulse activity, while indicates a constant HIGH. What is wrong, and how can the memory be tested to determine whether it is defective or if the external circuitry is defective?
Options
A. One of the inputs to the active-LOW select AND gate may be stuck high for some reason; take both select lines LOW and check for pulse activity on the outputs, Q0?Q3. If the outputs now respond, the problem is most likely in the program or circuitry driving the select lines.
B. The problem appears to be in the two address lines that never change levels; the problem is probably in the program driving the memory address bus.
C. The output buffers are probably defective since they are all tied together; the common input line is most likely stuck LOW. Change the output buffer IC.
D. Since no data appears to be getting through to the output buffers, the problem may be in the X decoder; change the X decoder IC.

4. What type of device is shown in the given figure, and what inputs (A3,A2,A1,A0) are required to produce the output levels as shown?
Options
A. A binary-to-decimal encoder; 0,1,1,1
B. A decimal-to-binary decoder; 1,1,1,0
C. A BCD-to-decimal decoder; 0,1,1,1
D. A decimal-to-BCD encoder; 1,1,1,0

5. Refer the given figure. Which of the following describes the operation of the circuit?
Options
A. A LOW input turns Q1 and Q3 on; Q2 and Q4 are off.
B. A LOW input turns Q1 and Q4 off; Q2 and Q3 are on.
C. A HIGH input turns Q1, Q2, and Q3 off, and Q4 is on.
D. A HIGH input turns Q1, Q2, and Q4 on; Q3 is off.

6. In the frequency counter, the length of time for the ________ to be enabled can be selected with the range select input.
Options
A. display register
B. frequency prescaler
C. BCD counter
D. signal generator

9. Subtract the following binary numbers.

0101 1000 1010 0011 1101 1110

?0010 0011 ?0011 1000 ?0101 0111
Options
A. 0011 0100 0110 1010 1000 0110
B. 0011 0101 0110 1011 1000 0111
C. 0011 0101 0110 1010 1000 0111
D. 0011 0101 0110 1010 1000 0110

10. One advantage that MOSFET transistors have over bipolar transistors is ________.
Options
A. high input impedance
B. higher switching speed
C. low input impedance
D. reduced propagation delay

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