hey, this are the equations i got them from my k map , but when i implment them

Question

hey, this are the equations i got them from my k map , but when i implment them using multisim program it does not work , can you just tell me where is the problem in my circit
If X = 1, the segments a, b, g, e, d, c, g, and f will light up one by one, in a sequential fashion, giving the illusion of an ant moving in circular way.
these are the equations

JA = KA = X QB QC

JB = KB = X QC

JC = KC = X

Grn Designl Multisim [Design 1l En le Edit View Place MCU Simulate Transfer Iools Reports Qption Window Help VCC 9.0V Wppy 13.1 mw Key A Voltage regulator Timer C1 C2 R2 RO R3: C3 Designl. For Help, press F1 AND3 JA QA U2 AND2 JB bel DCD-3TO8 U6 01:03

Explanation / Answer

The logic and the connection seems to be correct. SInce the required output is not coming, please check the following:

1. Vcc or the power supply connection to the flip flops, u1, u2 u3 and u5.

2. If the connection has been made to the power supplies of these, then try simulating each stage separately. ie.., simulate the voltage regulator circuit alone first and check if the voltage is coming out of this unit. Next, check the timer output, followed by the flip flop outputs or the counter inputs and then the counter outputs.If the output doesnt come still, then please include the details of each stage and list where the output is not coming.

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