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Need a help to check wheres the error

Fenn

Jul 9, 2023
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1688866371195.png
Ive tried to simulate but it doesnt work. please help me.
 

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Delta Prime

Jul 29, 2020
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Give a short description on what you wish to accomplish with your seven segment display
 

Fenn

Jul 9, 2023
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You have a link where you got this schematic? is his homework?
Get rid of R12 see what happens.
1688876762752.png i
i did remove the r12 and still not working. yes its a simulation for mini project. i would leave an attachment of this circuit here
 

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Delta Prime

Jul 29, 2020
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i did remove the r12 and still not working. yes its a simulation for mini project.
Sorry. That's why I deleted it you're quick! (And I'm slow.. bad combo).I doubt anyone's going to unzip the file. Just explain the teacher's instructions.
 

Fenn

Jul 9, 2023
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Sorry. That's why I deleted it you're quick! (And I'm slow.. bad combo).I doubt anyone's going to unzip the file. Just explain the teacher's instructions.
Its okay,,, the objective is to design a binary up counter circuit that perform counting from 0000 to 1001. And the result is converted as decimal numbers on segment display
 

belmontDubois

Jul 3, 2023
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Why do you have connected the ouput of the 555 timer to the inputs A-D of the 74LS193 instead the UP (or DOWN) input clock?
Why the value of R1 and R2 is 100R? You need to adjust the parameters to satisfy [imath]R_1,R_2 \geq 1k\Omega[/imath]
If you want the timer to oscillate a certain frequency then use the "555 timer wizard". In multisim go to Tools > Circuit Wizards > 555 timer wizard. apparently you are using it but you changed the values.
What is the circuit supposed to do? You did not specify that. Is it a 0-9 counter? Because 74LS193 is a MODULO-16 Binary counter.


When the output of the 555 timer is high, then the inputs A-D are also high, i.e., A=1, B=1, C=1 and D=1. With this, each output may be preset to either level by entering the desired data at the data inputs while the load input is low. But in your case, the LOAD input (pin 11) is always LOW, you need a pulse instead. There will be no force in the universe that will be able to change the output of the 74LS193 if the LOAD pin is always LOW.

1688881121922.png
 

Delta Prime

Jul 29, 2020
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the objective is to design a binary up counter circuit that perform counting from 0000 to 1001
start with the last digit in 1001 on the right side and then work your way to the left.
What does 1001 in binary equal in decimal?
 
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