| 1. | What is the difference between a ring shift counter and a Johnson shift counter ? | |
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There is no difference
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A ring is fast
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The feedback is reversed
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The Johnson is faster
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Report Question| 2. | What type of register would have a complete binary number shifted in one bit at a time and have all the stored bits shifted out one at a time ? | |
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parallel-in, parallel-out
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parallel-in, serial-out
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serial-in, parallel-out
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serial-in, serial-out
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| 3. | What is the function of a buffer circuit ? | |
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to provide an output that is inverted from that on the input
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to provide an output that is equal to its input
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to clean up the input
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to clean up the output
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| 4. | Which type of device may be used to interface a parallel data format with external equipment's serial format ? | |
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key matrix
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UART
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memory chip
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series in, parallel out
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| 5. | What is the preset condition for a ring shift counter ? | |
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all FFs set to 1
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all FFs cleared to 0
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a single 0, the rest 1
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a single 1, the rest 0
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| 6. | When the output of a tristate shift register is disabled, the output level is placed in a: ? | |
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float state
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LOW state
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high-impedance state
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float or high-impedance state
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| 7. | The terminal count of a modulus-11 binary counter is ________ ? | |
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1010
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1000
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1001
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none
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| 8. | A MOD-12 and a MOD-10 counter are cascaded. Determine the output frequency if the input clock frequency is 60 MHz ? | |
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500 kHz
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1,500 kHz
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6 MHz
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5 MHz
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| 9. | Which segments of a seven-segment display would be required to be active to display the decimal digit 2 ? | |
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a, b, d, e, and g
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a, b, c, d, and g
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a, c, d, f, and g
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a, b, c, d, e, and f
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| 10. | Which of the following is an invalid output state for an 8421 BCD counter ? | |
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1110
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0000
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0010
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0001
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