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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