Exam 2 - ECE 250 EXAM # 2 Closed book, multiple choice...

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ECE 250 EXAM # 2 Name : ______ Closed book, multiple choice exam. Choose the one best answer. Lab Section : ________ 1. If Q D Q C Q B Q A = 1101 initially, what are the contents of the shift register below after the input sequence SI = 101110 is applied? (Assume 6 clock pulses are used.) 1) 1111 2) 1001 3) 0110 4) 1101 5) 1110 2. What frequency clock source will produce clock waveforms having a period equal to 50 μ sec? 1) 2 kHz 2) 20 kHz 3) 5 MHz 4) 200 kHz 5) 50 MHz Note: μ = micro = 10 -6 m= milli = 10 -3 k= kilo = 10 +3 M= Mega = 10 +6 3. What transient state does a 4-bit ripple counter transit through between count = 0101 and count = 0110? 1) 0001 2) 0010 3) 0011 4) 0100 5) 0111 4. In general, the Next State of a sequential logic circuit is determined by the: 1) MEMORY ELEMENTS 2) INPUT LOGIC BLOCK 3) OUTPUT LOGIC BLOCK 4) INPUTS only 5) OUTPUTS only 5. Q n+1 is stable over which of the following clock regions? 1) Region A 2) Region B 3) Region C 4) Region D 5) Region E 6. The sequential logic circuit shown below represents most closely the basic architecture of a: 1) Data-latch register 2) Ripple counter 3)
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This note was uploaded on 04/07/2008 for the course ECE 250 taught by Professor Brianbuffin during the Spring '08 term at Western Michigan.

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Exam 2 - ECE 250 EXAM # 2 Closed book, multiple choice...

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