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1. What are the differences between Combinational and Sequential Circuits? 2. How does Edge-Triggered D Flip-flop...
1. (10) Which of the following describes the operation of a positive edge-triggered D flip-lop? A...
logic circuit
1. (10) Which of the following describes the operation of a positive edge-triggered D flip-lop? A. If both inputs are HIGH, the output will toggle. B. The output will follow the input on the leading edge of the clock. C. when both inputs are LOW, an invalid state exists. D. The input is toggled into the flip-flop on the leading edge of the clock and is passed to the output on the trailing edge of the clock. Answer...
How does Edge-Triggered D Flip Flops work? (Describe in Detail)
How does Edge-Triggered D Flip Flops work? (Describe in Detail)
1. a) Complete the waveform templates for the Master –Slave D-flip-flop below with given D, CLK,...
1.
a) Complete the waveform templates for the Master –Slave
D-flip-flop below with given D, CLK, CLEAR, and PRESET signals.
Neglect the propagation delays.
b) Does it have positive or negative edge triggering with
respect to CLK?
c) Are the asynchronous PRESET and CLEAR active-high or
active-low?
2. Enabling of data load in the D-flip-flop was implemented with
a 2-to-1 multiplexer as show below. The D-flip-flop has the
positive edge triggering and the active-low asynchronous clear.
a) Is the Enable...
What does t3 and t4 equal? (1 or 0) For a positive edge-triggered D flip flop...
What does t3 and t4 equal? (1 or 0)
For a positive edge-triggered D flip flop with the input as shown in figure, determine the relative to the clock. Assume that W starts LOW. 70 Q output at t4 At t3 At t4
3) Recall that a flip-flop is built from 2 latches cascaded in the master-slave configuration as...
3) Recall that a flip-flop is built from 2 latches cascaded in the master-slave configuration as shown in Figure S. Assume that each latch has a D-to-Q propagation delay of 5ns and a D to-Q contamination delay of 2ns. The inverter has a propagation delay of 5ns and a contamination delay of ens. If you were the designer of this flip-flop, what would you report as the setup time and hold time of the flip-flop? D latch (master) D latch...
Purpose The purpose of this homework is to better understand how real-world device delays effect the...
Purpose The purpose of this homework is to better understand how real-world device delays effect the maximum speed of operation in sequential synchronous designs. Assignment A sequential network has been implemented using two D flip/flops, and discrete combinational logic as shown in the figure below. Assume that the inputs A and B always change at the same time as the falling edge of the 50% duty cycle clock. Also assume the following delay parameters for the combinational logic elements: The...
1. The D Flip-Flop ) Look for the datasheet of the 7474 D flip-flop and wire it on the breadboard...
1. The D Flip-Flop ) Look for the datasheet of the 7474 D flip-flop and wire it on the breadboard making sure to supply 5V to both Preset and Clear. Utilize the function generator to provide a Clock signal of 1 Hz: i) Press AMPL and set value to 5 Vpp ii) Press FREQ and set value to 1 Hz ili) Press OFFSET and set value to 2.5 V This Clock signal will be the same for all circuits in...
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...
3.1 What is the functional difference between a normal diode and a Zener diode? 3.4 What...
3.1 What is the functional difference between a normal diode and a Zener diode? 3.4 What are the three states of operation of a BJT? 3.8 What information does a timing diagram give? 3.9 What is the difference between combinational and sequential logic circuits? 3.10 What is a Karnaugh map? 3.11 Why do many digital circuits have clocked input? 3.12 Explain the function of a multiplexer. 3.13 What is the difference between an SR and a JK flip-flop? 3.14 How...
1. Draw the timing diagram for a negative-edge-triggered D flip-flop with Preset and Clear functionalities for...
1. Draw the timing diagram for a negative-edge-triggered D flip-flop with Preset and Clear functionalities for the following input signal combina- tions. The signal values for Clock, D, Preset, and Clear vary as shown below. Assume each signal is held constant from one-time step to the next. Assume gate delays to be zero. Assume the initial value of Q to be 0. The truth table is shown on the next page. (a) Draw the wave forms for Clock, D, Presetn,...
logic circuit
1. (10) Which of the following describes the operation of a positive edge-triggered D flip-lop? A. If both inputs are HIGH, the output will toggle. B. The output will follow the input on the leading edge of the clock. C. when both inputs are LOW, an invalid state exists. D. The input is toggled into the flip-flop on the leading edge of the clock and is passed to the output on the trailing edge of the clock. Answer...
1.
a) Complete the waveform templates for the Master –Slave
D-flip-flop below with given D, CLK, CLEAR, and PRESET signals.
Neglect the propagation delays.
b) Does it have positive or negative edge triggering with
respect to CLK?
c) Are the asynchronous PRESET and CLEAR active-high or
active-low?
2. Enabling of data load in the D-flip-flop was implemented with
a 2-to-1 multiplexer as show below. The D-flip-flop has the
positive edge triggering and the active-low asynchronous clear.
a) Is the Enable...
What does t3 and t4 equal? (1 or 0)
For a positive edge-triggered D flip flop with the input as shown in figure, determine the relative to the clock. Assume that W starts LOW. 70 Q output at t4 At t3 At t4
3) Recall that a flip-flop is built from 2 latches cascaded in the master-slave configuration as shown in Figure S. Assume that each latch has a D-to-Q propagation delay of 5ns and a D to-Q contamination delay of 2ns. The inverter has a propagation delay of 5ns and a contamination delay of ens. If you were the designer of this flip-flop, what would you report as the setup time and hold time of the flip-flop? D latch (master) D latch...
Purpose The purpose of this homework is to better understand how real-world device delays effect the maximum speed of operation in sequential synchronous designs. Assignment A sequential network has been implemented using two D flip/flops, and discrete combinational logic as shown in the figure below. Assume that the inputs A and B always change at the same time as the falling edge of the 50% duty cycle clock. Also assume the following delay parameters for the combinational logic elements: The...
1. The D Flip-Flop ) Look for the datasheet of the 7474 D flip-flop and wire it on the breadboard making sure to supply 5V to both Preset and Clear. Utilize the function generator to provide a Clock signal of 1 Hz: i) Press AMPL and set value to 5 Vpp ii) Press FREQ and set value to 1 Hz ili) Press OFFSET and set value to 2.5 V This Clock signal will be the same for all circuits in...
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...
1. Draw the timing diagram for a negative-edge-triggered D flip-flop with Preset and Clear functionalities for the following input signal combina- tions. The signal values for Clock, D, Preset, and Clear vary as shown below. Assume each signal is held constant from one-time step to the next. Assume gate delays to be zero. Assume the initial value of Q to be 0. The truth table is shown on the next page. (a) Draw the wave forms for Clock, D, Presetn,...
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