Question

In MultiSim, design a PWM circuit. You will need a 0 to 9 counter, which you should build from flip flops and basic logic gates. The PWM input will come from 4 input switches as a binary number. For the comparator, you can build your own from basic gates, or use one of the commercially available comparator chips (74HC85 Digital IC). An oscilloscope in MultiSim can be used to verify duty cycles.

Answer #1

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...

Counters and controllers
A circuit has two inputs a and b. A counter counts the number times
that in 3 consecutive clock pulses a and b are equal. Design this
circuit using a counter and basic logic gates and flip-flops. The
counting is modulo-16 and it rolls back to 0 after it reaches 15.
Provide an asynchronous reset input that resets the sequence
detection and the counting.

Design a circuit for a synchronous 4-bit counter. Your counter
should count up starting from 0 to 9 (00002
to 10012)
and then wind back to 0 (00002)
–
after 9, it should go back to 0.
Use 4 JK flip-flops and any other gates you need. Include your
design documentation in your submission:
a.
Truth table
b.
Simplification (show your work)
2.
Build this circuit in
Logisim.
Please label each gate, including flip-flops. You may need the
following wiring...

Multisim
A Shift Register is a series of flip-flops connected so that data
can be transferred to a neighbor each time the clock pulse is
active. These shift registers can be constructed using D or J-K
flip-flops.
A shift register counter is a shift register with the serial
output connected back to the serial input to produce special
sequences. Two of the most common shift register counters are the
Johnson Counter [Twisted Ring Counter] and the Ring Counter
[Overbeck Counter]....

Multisim Please
A Shift Register is a series of flip-flops connected so that data
can be transferred to a neighbor each time the clock pulse is
active. These shift registers can be constructed using D or J-K
flip-flops.
A shift register counter is a shift register with the serial
output connected back to the serial input to produce special
sequences. Two of the most common shift register counters are the
Johnson Counter [Twisted Ring Counter] and the Ring Counter
[Overbeck...

6. Please design a self-start 2-bit counter using the Finite
State machine. Note you can formulate the State truth table
(Present State/Next State/Inputs). Please design it using D
Flip-Flops or T-Flip Flops and combination gates. Current State
Next State input Q1Q0 Q1’Q0’ D1D0 (T1T0) 00 01 01 10

Given a binary string of zeros (0) and ones (1). You
have to build a circuit that counts the number of occurrences of
string '01' within the given string. For example, given
string
'01000110001001',
there are 4 occurrences of '01'
and output have to show number of occurance each time '01' occured.
Use a FSM and a counter (built from D flip-flops) to implement this
circuit. It is guaranteed that the number of occurrences is not
more than 31 (you...

Given a binary string of zeros (0) and ones (1). You
have to build a circuit that counts the number of occurrences of
string '01' within the given string. For example, given
string
'01000110001001',
there are 4 occurrences of '01'
and output have to show number of occurance each time '01' occured.
Use a FSM and a counter (built from D flip-flops) to implement this
circuit. It is guaranteed that the number of occurrences is not
more than 31 (you...

Given a binary string of zeros (0) and ones (1). You
have to build a circuit that counts the number of occurrences of
string '01' within the given string. For example, given
string
'01000110001001',
there are 4 occurrences of '01'
and output have to show number of occurance each time '01' occured.
Use a FSM and a counter (built from D flip-flops) to implement this
circuit. It is guaranteed that the number of occurrences is not
more than 31 (you...

3. Parity generator [20]
Submission file for this part: 3.circ
Main circuit name: paritygen
Input pin(s): inputw [1], sysclock [1]
Output pin(s): outputq [1]
Derive a minimal state table for a Moore model FSM that acts as
a three-bit parity generator. For every three bits that are
observed on inputw during three consecutive clock cycles,
the FSM generates the parity bit outputq = 1 if the number
of 1s received in the sequence so far is odd. Thus, this is...

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