A sequential circuit’s output ____. A. is dependent only on the present combination of input values...
A sequential circuit’s output ____.
| A. |
is dependent only on the present combination of input values |
|
| B. |
is dependent on the present and the past sequence of input values |
|
| C. |
creates a steady and predictable value for all input values |
|
| D. |
counts the number of changes that have been made to the input values |
The next value for an SR-Latch when s = 0, r = 1 is _____.
| A. |
0 |
|
| B. |
the previously-stored bit |
|
| C. |
1 |
|
| D. |
unknown |
If e = 0 for a D latch, what is the value of the output q?
| A. |
1 |
|
| B. |
The previously-stored bit |
|
| C. |
q = d |
|
| D. |
0 |
The difference between a D latch and a D flip-flop is ___.
| A. |
the D latch is sensitive to an enable, while the D flip-flop is sensitive to a clock |
|
| B. |
the D latch has an enable, while the D flip-flop does not |
|
| C. |
the D latch stores one bit, while the D flip-flop stores two bits |
|
| D. |
the D latch is level-sensitive, while the D flip-flop is edge-triggered |
Homework Answers
Add Answer to:
A sequential circuit’s output ____.
A.
is dependent only on the present combination of input values...
(30 pts).Given the input and clock transitions in the following figure indicate the output of a...
(30 pts).Given the input and clock transitions in the following figure indicate the output of a D device assuming: a) It is a positive edge-triggered flip-flop (7474) (b It is a (positive) level-sensitive latch (7476) Note: You may assume 0 setup, hold, and propagation delays. Clk Q 7474 Q 7476
Draw waveforms for the indicated latch and flip-flop outputs. The initial value for each output is...
Draw waveforms for the indicated latch and flip-flop outputs.
The initial value for each output is 0 as shown.
CLK D Transparent low latch Q Transparent high latch Q Negative Edge Triggered Flip-flop Q Positive Edge Triggered Flip-flop Q
a) (5 marks) Explain the difference between a latch, a gated latch and a flip flop....
a) (5 marks) Explain the difference between a latch, a gated latch and a flip flop. b) (5 marks) A gated SR latch has the following schematic diagram CLK a) Draw a timing diagram showing the Q and Q outputs for the following sequence of inputs: CLK R Assume that the initial state of the outputs is Q 0 and Q 1 c) (5 marks) Draw a schematic diagram for a rising edge-triggered master-slave D flip- flop built using two...
Answers are at the end of the chapter 1. If an S-R latch has a 1...
Answers are at the end of the chapter 1. If an S-R latch has a 1 on the S input and a 0 on the R input and then the S input goes to 0, the latch will be (a) set (b) reset (c) invalid (d) clear 2. The invalid state of an S-R latch occurs when (c) S 1,R-1 (d) S-0, R-O 3. For a gated D latch, the output always equals the D input (a) before the enable...
A SEQUENCE DETECTOR that detects the sequence 00 must be designed whose present output z(k) is set to one when the past input u(k-1) is zero and the present input u(k) is also zero
Question #2. Design of a Sequential Circuit: A SEQUENCE DETECTOR that detects the sequence 00 must be designed whose present output z(k) is set to one when the past input u(k-1) is zero and the present input u(k) is also zero, where for the other three possible combinations of the input pair u(k-1), u(k) the present output z(k) is set to zero. The state diagram for a sequential circuit that detects the input sequence 00 discussed above is given below:a) Complete...
Design a sequential circuit whose output Z becomes 1 when the pattern "01101" is found at 1-bit input X under the following conditions. (1) Use a D flip-flop for the flip-flop used as a Mealy...
Design a sequential circuit whose output Z becomes 1 when the pattern "01101" is found at 1-bit input X under the following conditions. (1) Use a D flip-flop for the flip-flop used as a Mealy machine (2) Use a RS flip-flop for the flip-flop used as a Moore machine
1. A sequential circuit has one JK flip-flop A, one input x, and one output y....
1. A sequential circuit has one JK flip-flop A, one input x, and one output y. The flip-flop input equation and circuit output equation are: (a) Draw the logic diagram of the circuit (b) Tabulate the state table of the circuit (P. S., Input, N. S., Output). (c) Draw the state diagram. (d) Derive the state equation A(t+ 1). (e) Starting from state A 0 in the state diagram, determine the state transitions and output sequence that will be generated...
a) Draw an SR-latch using only NAND gates. Label each input and output, and label all...
a) Draw an SR-latch using only NAND gates. Label each input and output, and label all wires with a name if the wire does not connect to any input or output b) Describe the behavior of the latch when S and R are both 0. What is the output of each gate? c) Assuming that the latch starts with S = R = 0, write down the sequence of what happens when R = 1. Discuss changes at each point...
3) A digital circuit is shown input output input 4 input This circuit performs the function...
3) A digital circuit is shown input output input 4 input This circuit performs the function of a(n) (A) SR flip-flop (B) JK flip-flop (C) D flip-flop (D) T flip-flop 4) A digital circuit is shown inputs Y Z output no. 1 output no. 2 This circuit performs the function of a (A) 2-bit comparator (B) decoder (C) full-adder (D) full-subtractor
For the input shown below, draw the timing diagrams for the flip flop output Q (assume...
For the input shown below, draw the timing diagrams for the flip flop output Q (assume negative edge triggered flip flops) 1 CLOCK D or T CLR PRE 1.1 Assume a D flip-flop without a clear or preset 1.2 Assume a D flip-flop with active low clear CLR' 1.3 Assume a D flip-flop with active low clear CLR' and preset PRE 1.4 Assume a T flip-flop without a clear or preset (Q is initially 1) 1.5 Assume a T flip-flop...
(30 pts).Given the input and clock transitions in the following figure indicate the output of a D device assuming: a) It is a positive edge-triggered flip-flop (7474) (b It is a (positive) level-sensitive latch (7476) Note: You may assume 0 setup, hold, and propagation delays. Clk Q 7474 Q 7476
Draw waveforms for the indicated latch and flip-flop outputs.
The initial value for each output is 0 as shown.
CLK D Transparent low latch Q Transparent high latch Q Negative Edge Triggered Flip-flop Q Positive Edge Triggered Flip-flop Q
a) (5 marks) Explain the difference between a latch, a gated latch and a flip flop. b) (5 marks) A gated SR latch has the following schematic diagram CLK a) Draw a timing diagram showing the Q and Q outputs for the following sequence of inputs: CLK R Assume that the initial state of the outputs is Q 0 and Q 1 c) (5 marks) Draw a schematic diagram for a rising edge-triggered master-slave D flip- flop built using two...
Answers are at the end of the chapter 1. If an S-R latch has a 1 on the S input and a 0 on the R input and then the S input goes to 0, the latch will be (a) set (b) reset (c) invalid (d) clear 2. The invalid state of an S-R latch occurs when (c) S 1,R-1 (d) S-0, R-O 3. For a gated D latch, the output always equals the D input (a) before the enable...
1. A sequential circuit has one JK flip-flop A, one input x, and one output y. The flip-flop input equation and circuit output equation are: (a) Draw the logic diagram of the circuit (b) Tabulate the state table of the circuit (P. S., Input, N. S., Output). (c) Draw the state diagram. (d) Derive the state equation A(t+ 1). (e) Starting from state A 0 in the state diagram, determine the state transitions and output sequence that will be generated...
3) A digital circuit is shown input output input 4 input This circuit performs the function of a(n) (A) SR flip-flop (B) JK flip-flop (C) D flip-flop (D) T flip-flop 4) A digital circuit is shown inputs Y Z output no. 1 output no. 2 This circuit performs the function of a (A) 2-bit comparator (B) decoder (C) full-adder (D) full-subtractor
For the input shown below, draw the timing diagrams for the flip flop output Q (assume negative edge triggered flip flops) 1 CLOCK D or T CLR PRE 1.1 Assume a D flip-flop without a clear or preset 1.2 Assume a D flip-flop with active low clear CLR' 1.3 Assume a D flip-flop with active low clear CLR' and preset PRE 1.4 Assume a T flip-flop without a clear or preset (Q is initially 1) 1.5 Assume a T flip-flop...
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