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3bit jk synchronous counter. it counts till 5 then resets if oyuwant to remove the reset just disconnect the async reset .

Experiment No 10: Implement a decade counter using basic gates.

Done by:

Saranga K. Mahanta

Scholar Id: 18-14-038

Done by: 

Saranga K. Mahanta

18-14-038

This is a 2-bit counter.  2-bit counters normally can count 4 numbers: 0, 1, 2, 3. However, this circuit counts up to 2 and resets at 3.  This can be scaled by adding more D flip-flops and setting the And gate at the location you want the count to stop at.  You can also set a starting number in a similar fashion.  This can be modified to a synchronous 2-bit counter using JK flip flops.

3 bit counter

A 2-bit counter that counts from 0 to 3! :D

Set "Count" to 1 to start counting and set it to 0 to pause the counter. Set "Increment/Decrement" to 1 to count up and 0 to count down.

synchronous binary counter

simple, you can expand if you want

A binary to 7 segment counter, pretty cool! (FINALLY, 5 DIGITS)

4 bit Asynchronous Counter using JK FlipFlops

it counts.

it counts

1. Mod 8 counter jk flip flop

it does what it says on the tin.

edit: the 13 is broken, but when I go in to edit everything breaks so :\ I'm pretty sure it's because I hooked up the 13 to the bottom left node in the "decoder4display"

edit: I went in to check and that is in fact the issue. I still have no clue wtf is wrong with the "decoder p1", as I changed literally nothing, but apparently I messed up. someone, please take a look at it and see what went wrong bc I really don't have any idea.

A completely original (4-bit) counter I made.

My first experiment with Subcircuits.

In this MOD 11 counter, it counts 0 to 10. i.e from 0000 to 1010, then it repeats itself. For 4 bits, 4 counters are required. Here -ve edge triggered T flipflop is taken.

J_A = 1, K_A = Q_C'

J_B = Q_A.Q_C, K_B = Q_A'

J_C = 1, K_C = Q_A + Q_B

J_A= K_A = Q_B; J_B = K_B = 1; J_C = 1, K_C=0

T_A = Q_A + Q_B.Q_C.Q_D; T_B = Q_C.Q_D; T_C = Q_D; T_D = Q_A'

4-bit synchronous counter created using JK flip flops where mode, M=0 is the up counter and M=1 is the down counter.

This is a 2 bit counter using d flip-flops that skips 0. The sequence is 1, 2, 3, 1, 2,... .

A multiplication circuit designed to multiply two 8-bit numbers, creating a 16-bit output. The values are unsigned, and input into two locations in a currently unconventional way. The output is stored in the flip-flop array to the right. The button at the top starts or resets the program. 

Simulator of slot machine. Press START button!

3 Bit Asynchronous Down Counter

Synchronous 0-7 up counter and 7-0 down counter using J-K' flip-flops (74LS109).

My first slightly complicated circuit!

yea

4 bit Asynchronous counter

Example of counter mod 5 made with flip flop JK

There's several buttons in the circuit. If you figure out what those do, the laws of time of this circuit's universe are yours to behold.

Note to future me to fix the following bug (if it even exists in the real world due to propagation delay). 

The set 1 function of #2 works in the sub-circuit but fails to work for the output pulse in the main circuit. This is troubling to say the least. So I've decided to change hour 12:00 to 00:00. 

digital electronic presentation

Visualizing advanced counter with 7 segment display

U/D stands for UP/DOWN

M :

if the counter is in position 00 when the control signals change to 10 the counter must remain in position 00

if the counter is in position 11 when the control signals change to 11 the counter must remain in position 11

4-bit simple counter based on JK-flip-flop

This is a  "Synchronous BCD Counter To Seven Segment Decoder" made using T flip flop .

Firstly, the counter is made using T flipflop and then its output i.e(count) is converted to digital using Seven Segment Decoder

Counts from 0 to 10 and resets itself. Made on top of mod16. 

4-bit up-counter using D flip-flops.

Here is a full circuit diagram of 4-bit Synchronous Counter.

Feel free to contact me for any further concern.

Thank you.

Regards,

Noman Ali.

NULL

Takes in a 3-bit input and computes a 2-bit output.

The output represents the amount of zeros in the input:

00 - 0 zeros

01 - 1 zero

10 - 2 zeros

11 - 3 zeros

This is a work in progress computer. 

Instructions on use: 

Make sure you set the clock speed to 50. First connect the desired EEPROM into the program socket. The double click the reset button on the user interface panel. Finally, turn it on using the on button.

Description of EEPROMS(more will be added soon):

Blank: This is a blank slate that you can code on. 

Jump Showcase: This uses the jump command to turn on and off the hex display in an infinite loop

Display Stepper: This detects whatever is being inputted on the input stepper and displays it on the hex display.

A basic dice led configuration driver circuit which was created using k maps and a counter to display all possible values from the dice.

In the 3 bit counter the last 2 set the traffic lights in 3 possible states (1 green for each path) while the 1st flipflop is used to provide the short duration yellow -> red state change (How it works in my country). 

All logical expression have been derived from k maps at specific states.

Use the button inorder to jump from left to right and vice vera and try avoiding the incoming obstacles.

If you collide with it you die and can restart using the restart button given at the bottom.

Change the difficulty by reducing the timing setting of the clock and good luck :D.

The counter has two control inputs and 4-bit output, indicating the count. The counter counts from 0 to 9 and resets to zero at 9.

Multiple variations of a 3-bit gray code up counter.
JK -> D -> D using NAND -> Decoder to Display

EDIT: Added BCD-to-7-Segment Sub Circuit

4 bites aszinkron fel/le számláló/ 4 bits asynchronous up/down counter

4 bites szinkron számláló/4 bit synchronous counter with reset

Circuito criado visando prática aos estudos sobre Circuitos Combinacionais realizados na disciplina de Circuitos Digitais - Universidade Federal do Maranhão.