Question

Implement the following circuit to test the characteristics of
a D flip flop.

Note:

Using a clock input to operate the flip-flop is rather
quickly.

You may wish to select the slow motion of the clock OR

to use a simple binary input device instead of a clock input
device.

Verify the flip flop state table.

Q(t+1) = D, is the characteristic equation.

Characteristic Table Excitation Table

==================== ===================

D Q(t+1) Operation Q(t) Q(t+1) D

==================== ===================

0 0 Reset 0 0 0

-------------------- -------------------

1 1 Set 0 1 1

==================== -------------------

1 0 0

-------------------

1 1 1

===================

Questions:

Is a D flip-flop positive or negative edge
triggered?________

What happens when the Set pin is set to one?__________

What happens when the Reset pin is set to one?_________

Does it matter what the D input is when either Set or Reset is
one?_________

Answer #1

Implement the following circuit to test the characteristics of a
D flip flop.
Note:
Using a clock input to operate the flip-flop is rather
quickly.
You may wish to select the slow motion of the clock OR
to use a simple binary input device instead of a clock input
device.
Verify the flip flop state table.
Q(t+1) = D, is the characteristic equation.
Characteristic Table Excitation Table
==================== ===================
D Q(t+1) Operation Q(t) Q(t+1) D
==================== ===================
0 0 Reset...

How do I design a divide by 4 clock in verilog using 2 D Flip
Flop blocks? I have created this divide by 2 clock D Flip Flop
block so far:
module divide_by_2(D, Clk,reset, Q, Qnext); //Divide by 2 clock
with reset using D flip flop
input Clk, D, reset;
output Q,Qnext;
reg Q;
assign Qnext = ~Q;
always @(posedge Clk or posedge reset) //always at the
positive edge of the clock or...

Design a 6-bit, shift-right register with D flip flops, and use
it to implement a circuit that detects the sequence “010010” (the
rightmost bit is the first arriving). Information shifts one
position right when a positiv edge of clk occurs The circuit has
the following inputs and outputs (use exactly these names for
inputs and outputs. Respect upper and lower case):
clk: Input. Clock signal.
RST: Reset signal. When RST = 1 flip flops are reset to 0.
IN: Data...

1) Write down the characteristic table for a positive-edge
triggered D flip-flop.
2) Explain the difference between the D latch and the D
flip-flop.

Using three rising-edge-triggered T flip-flops and a minumum
number of additional gates, construct a circuit that will operate
as a binary counter with an enable signal E. When
E = 1, the counter should increment from 0 to 7 on each
clock pulse, with (flip-flop outputs
Q2Q1Q0 = 000-
001-010-011-100-101-110-111) and then roll over to 000 and repeat
the sequence. When E=0, the counter should stop and hold
its current count.
Note: (not modulo-8, but modulo-6: 000-001-010-011-100-101-000-
... )

Draw the circuit for the Flip-Flop that can store one
bit (0 or 1). Explain what combinations of inputs are “Set”,
“Reset” and “Undefined” or “Invalid”.

FSM: Sequence 00,01,11,10 Example
A complete FSM is constructed by combining the next state
function and D flip-flops. This exercise provides the next_pattern,
the dff module, and the fsm module. Only the next_pattern has to be
completed.
Complete the next_pattern module, that provides the next state
table for a sequence generator. The sequence is 00, 01, 11, and 10.
The reset state is 00.
0001111000011110
The dff module provides a positive edge trigger D flip-flop with
a specified reset state...

Question:
- Draw the circuit for the Flip-Flop that can store one
bit (0 or 1). Explain what combinations of inputs are “Set”,
“Reset” and “Undefined” or “Invalid”.
- List four of LC-3
computer’s opcode mnemonics and their corresponding 4-digit
opcodes, explain what each opcode performs.

Design 2 bits counter that count down by using T flip flop when
input x =1 and counts up
when x=0. Find the following
1. Derive the state table
2. Derive the K‐map simplifications.
3. Draw the logic diagram

Design a counter which counts in the sequence that has
been assigned to you. Use D flip flops and NAND gates. Simulate
your design using SimUaid.
Submit the state table, D flip-flop input equations,
and transition graph determined in Part 6. The D flip-flop
equations can be derived using Karnaugh maps or using LogicAid by
entering a state table with zero input variables.
Sequence: 000,100,001,110,101,111,(repeat)
000,...
Also, please answer the following questions:
How can a D flip-flop be set to...

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