Homework Answers
Answer -
How are the Q and 
outputs of a flip flop affected
by setting the active high asynchronous PRESET input to a logic
one?
- The correct option for the question is OPTION - (B).
- OPTION - (B) - Q = 1
and
= 0 - This is the correct answer beacuse these inputs like PRESET make the flip flops asynchronous as this input SET the flip flop irrespective of what was the status of the clock signal.
- This input is preferably is given in the active high in the flip flop. These asynchronous inputs are used when there are many flip flops used for a function and we have to set the flip flop in the middle so it makes the output of the flip flop in the state as mention in the option.
Add Answer to:
08. How are the Q and outputs of a flip flop affected by setting the active...
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...
Write the verilog code that implements a negitive edge D-Flip Flop with asynchronous active low preset...
Write the verilog code that implements a negitive edge D-Flip Flop with asynchronous active low preset and clear I have : module dff( preset, clear, clk, D, Q) input preset; input clear; input clk; input D; output Q; reg Q; always @ (negedge clk or negedge preset or negedge clear); if (preset); Q = 0; else (clear == 0); Q = D; endmodule I honestly just want to know if i'm doing this right or not, if im not correct,...
Use the Quartus Prime Text Editor to implement a behavioral model of the D flip-flop described ab...
Use the Quartus Prime Text Editor to implement a behavioral
model of the D flip-flop described above in a file named
d_flops.sv. Specify the D flip-flop’s module according to the
interface specification given in the table below.
Port
Mode
Data Type
Size
Description
RST
in
logic
1-bit
Active high asynchronous reset
CLK
in
logic
1-bit
Synchronizing clock signal
EN
in
logic
1-bit
Synchronous clock enable
D
in
logic
1-bit
Synchronous data input
Q
out
logic
1-bit
Current/present state
Qbar
out...
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...
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...
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...
UUUUWW PUCH ( WIN) (1) Flip Flop Operation: a. Given the following D Flip Flop circuit...
UUUUWW PUCH ( WIN) (1) Flip Flop Operation: a. Given the following D Flip Flop circuit and Function Table, complete the timing diagram for Q. Function Table Outputs Inputs CLR XXX III II XXX IX (Note 1) (Note 1) - HE HIGH Logie Level XEther LOW HIGH Logic Level LLOW Loge Level Positive going transition of the clock The output logic level of before the indicated in conditions were established Note: This conti ophen the preset and for clear inputs...
7. Construct the D-flip-flop with positive-edge triggering and asynchronous Clear (active-low). I...
7. Construct the D-flip-flop with positive-edge triggering and asynchronous Clear (active-low). Implement the Master-Slave design with two gated D-latches from problem 6 as building blocks and inverters. a) b) Show the schematic. Complete the waveform template below (neglect the propagation delays). Qm and Q are the outputs of the Master and Slave D-latches, respectively. The initial state is unknown. CLK CLK bar CLEAR Qm
7. Construct the D-flip-flop with positive-edge triggering and asynchronous Clear (active-low). Implement the Master-Slave design with...
23. A J-K flip-flop has a l on the J input and a 0 on the...
23. A J-K flip-flop has a l on the J input and a 0 on the K input. What state is the flip-flop in? (a) Q=1,0-0 (b) Q-1, Q-1 (c) Q-0,Q 1 (d) Q-0,Q-0 -24. On a positive edge-triggered S-R flip-flop, the outputs reflect the input condition when (a) the clock pulse is LOW (b) the clock pulse is HIGH (c) the clock pulse transitions from LOW to HIGH (d) the clock pulse transitions from HIGH to LOW 25. The...
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
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...
Use the Quartus Prime Text Editor to implement a behavioral
model of the D flip-flop described above in a file named
d_flops.sv. Specify the D flip-flop’s module according to the
interface specification given in the table below.
Port
Mode
Data Type
Size
Description
RST
in
logic
1-bit
Active high asynchronous reset
CLK
in
logic
1-bit
Synchronizing clock signal
EN
in
logic
1-bit
Synchronous clock enable
D
in
logic
1-bit
Synchronous data input
Q
out
logic
1-bit
Current/present state
Qbar
out...
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...
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...
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...
UUUUWW PUCH ( WIN) (1) Flip Flop Operation: a. Given the following D Flip Flop circuit and Function Table, complete the timing diagram for Q. Function Table Outputs Inputs CLR XXX III II XXX IX (Note 1) (Note 1) - HE HIGH Logie Level XEther LOW HIGH Logic Level LLOW Loge Level Positive going transition of the clock The output logic level of before the indicated in conditions were established Note: This conti ophen the preset and for clear inputs...
7. Construct the D-flip-flop with positive-edge triggering and asynchronous Clear (active-low). Implement the Master-Slave design with two gated D-latches from problem 6 as building blocks and inverters. a) b) Show the schematic. Complete the waveform template below (neglect the propagation delays). Qm and Q are the outputs of the Master and Slave D-latches, respectively. The initial state is unknown. CLK CLK bar CLEAR Qm
7. Construct the D-flip-flop with positive-edge triggering and asynchronous Clear (active-low). Implement the Master-Slave design with...
23. A J-K flip-flop has a l on the J input and a 0 on the K input. What state is the flip-flop in? (a) Q=1,0-0 (b) Q-1, Q-1 (c) Q-0,Q 1 (d) Q-0,Q-0 -24. On a positive edge-triggered S-R flip-flop, the outputs reflect the input condition when (a) the clock pulse is LOW (b) the clock pulse is HIGH (c) the clock pulse transitions from LOW to HIGH (d) the clock pulse transitions from HIGH to LOW 25. The...
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
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