Homework Answers
23. For a JK flip flop, the truth table is -
| J | K | Qn+1 |
| 0 | 0 | Qn |
| 0 | 1 | 0 |
| 1 | 0 | 1 |
| 1 | 1 | Toggles |
So, the answer is (a).
24. Positive edge triggered means the trigger occurs when the clock shifts from low to high.
So, answer is (c).
25. Answer is (a).
The small circle or not before the clock denotes negative edge triggering.
26. (a) is the answer. If both are high, only then will the flip flop behave normally. For case (b), Q will always be 0.
For case (c), Q will always be 1. For case (d), Q will be undefined.
27. The answer is (d), as it will not change the working of the R-S flip flop. Option (b) is only possible if we connect S with J (the input should be S only)and place an inverter in between the connection.
All flip flops are positive-edge triggered. Assume each flip flop starts at 0.
All flip flops are
positive-edge triggered. Assume each flip flop starts at 0.
Problem 11: (8 pts) For the following circuit, complete the timing diagram for the state of each flip flop and the output, where shown. All flip flops are positive-edge triggered. Assume each flip flop starts at 0. J-K FF TFF CLK PRE CLR PRE CLR CLR回 Clock CLR
Problem 11: (8 pts) For the following circuit, complete the timing diagram for the state of each flip flop...
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...
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...
e Q and Q output waveforms of the flip-flop in Figure 6-18 for the D and...
e Q and Q output waveforms of the flip-flop in Figure 6-18 for the D and CLK inpusts in Figure 6-19.(a). Assume that the positive edge-triggered flip-flop is initially RESEI CLK 4. For the positive edge-triggered J-K flip-flop with preset and clear inputs in Figure 6-27, determine the Q output for the inputs shown in the timing diagram in part (a) if Q is initially LOW CLK 几几几几几几 PRE PRE CLR CLR 5. Use a K-map to reduce the following...
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...
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. 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. How many s are oquinst to build a binary counter that counts tihom 0 to 102" s Determine he fhroquensy at the outpst of the last FF of this counter for an input clock trequneney What is the...
a. How many s are oquinst to build a binary counter that counts tihom 0 to 102" s Determine he fhroquensy at the outpst of the last FF of this counter for an input clock trequneney What is the counter's MOD number? d If the counter is initially at zero, what counter will it hold after 2060 pulses? 9 Cnsider the timing diagram shown below for JK Flip Flop (NOR), Complete the output waveform for Q clock IK Apply the...
3. Answer the following questions about a data flip-flop (D-Flip Flop): a) (4 ps) Write the VHDL required to define a rising-edge triggered (RET) D-Flip Flop with additional clock enable (CEN) an...
3. Answer the following questions about a data flip-flop (D-Flip Flop): a) (4 ps) Write the VHDL required to define a rising-edge triggered (RET) D-Flip Flop with additional clock enable (CEN) and reset inputs. Your reset may be synchronous or asynchronous. Assume any input, output, or signal variables that you require have already been declared in VHDL (you do not have to write the declarations for these) b) [I pal ls your reset syachronous or asynchronous for the D-Flip Flop...
Q1. The basic functionality of a D flip-flop (FF) can be implemented with a J-K FF...
Q1. The basic functionality of a D flip-flop (FF) can be implemented with a J-K FF by connecting the input D to J and D' to K. a) Show that this is true by comparing the characteristic equations for a D FF and JK FF. b) Draw a timing diagram for clock, D and outputs Qp, On, Qms that illustrates the difference in input/output behavior of a positive edge triggered D FF, negative edge triggered D FF and a master...
All flip flops are
positive-edge triggered. Assume each flip flop starts at 0.
Problem 11: (8 pts) For the following circuit, complete the timing diagram for the state of each flip flop and the output, where shown. All flip flops are positive-edge triggered. Assume each flip flop starts at 0. J-K FF TFF CLK PRE CLR PRE CLR CLR回 Clock CLR
Problem 11: (8 pts) For the following circuit, complete the timing diagram for the state of each flip flop...
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...
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...
e Q and Q output waveforms of the flip-flop in Figure 6-18 for the D and CLK inpusts in Figure 6-19.(a). Assume that the positive edge-triggered flip-flop is initially RESEI CLK 4. For the positive edge-triggered J-K flip-flop with preset and clear inputs in Figure 6-27, determine the Q output for the inputs shown in the timing diagram in part (a) if Q is initially LOW CLK 几几几几几几 PRE PRE CLR CLR 5. Use a K-map to reduce the following...
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...
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. 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. How many s are oquinst to build a binary counter that counts tihom 0 to 102" s Determine he fhroquensy at the outpst of the last FF of this counter for an input clock trequneney What is the counter's MOD number? d If the counter is initially at zero, what counter will it hold after 2060 pulses? 9 Cnsider the timing diagram shown below for JK Flip Flop (NOR), Complete the output waveform for Q clock IK Apply the...
3. Answer the following questions about a data flip-flop (D-Flip Flop): a) (4 ps) Write the VHDL required to define a rising-edge triggered (RET) D-Flip Flop with additional clock enable (CEN) and reset inputs. Your reset may be synchronous or asynchronous. Assume any input, output, or signal variables that you require have already been declared in VHDL (you do not have to write the declarations for these) b) [I pal ls your reset syachronous or asynchronous for the D-Flip Flop...
Q1. The basic functionality of a D flip-flop (FF) can be implemented with a J-K FF by connecting the input D to J and D' to K. a) Show that this is true by comparing the characteristic equations for a D FF and JK FF. b) Draw a timing diagram for clock, D and outputs Qp, On, Qms that illustrates the difference in input/output behavior of a positive edge triggered D FF, negative edge triggered D FF and a master...
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