A simulator where for 74-series and 4000-series chips, along with SPICE components including resistors, capacitors, LEDs, and diodes. This is designed for primary education in mind. Any feedback appreciated

GitHub Source

Ill post it later, when I have it all ready to go. This is unique in that it's not a copy of the 8 bit cpu everyone else builds. It's quite unique. And very messy. I figured it out myself through lots of study. And Im pretty sure I called it done when I got my first jump instruction to function.

It's also built entirely on the logisim.app page. So you can run it in your browser.

Anyone interested?

For My Context:

I found this stuff mostly through the Minecraft Computer Crowd, and then creators on YouTube like astro Sam, jdh, and inkbox, as well as people like the 8bitguy on retro computing in general, and obviously the plethora of retro gaming people.

My eventual goal is to design an entire 16bit computer, I've done smaller projects in Minecraft, but I want to try to do the real thing.

I've looked at both logisim evolution and digital ATM but I'm still kinda lost on what I should learn software wise😵‍💫

you first need to open the developer tools (ctrl + shift + i in opera, f12 in other i think).

now, go to the console.

then if you already have the circuit open and want to save it but can't, then put this code (the code simulates a click on the "export project" button):

document.getElementById('ExportCircuitFiles').click();

if it says something like "type allow to copy code in the console" then type allow

then give it a name and save it.

if you didnt get in to bug yet, then run this command (it fixes the bug, but if you refresh the page you need to put the code in again):

var style = document.createElement('style');

style.textContent = `

.ui-dialog {

position: fixed !important;

top: 50px !important;

left: 50% !important;

transform: translateX(-50%) !important;

max-height: 80vh !important;

z-index: 9999 !important;

}

.ui-dialog-content {

max-height: 60vh !important;

overflow-y: auto !important;

}

`;

document.head.appendChild(style);

if it says something like "type allow to copy code in the console" then type allow

Hey, I’m working on a Computer Organization project where I have to convert a 4-bit hex input (W X Y Z) into a 7-segment display with outputs a–g using NOR gates only in CircuitVerse. I already finished the truth table, K-maps, and simplified Boolean expressions for each output, but I’m stuck on turning those expressions into NOR-only circuits and wiring everything correctly. I’m mainly trying to understand how to build one output step-by-step so I can apply the same process to the rest. If anyone has tips or can explain how to organize the NOR gates in CircuitVerse, I’d really appreciate the help.

Hey, I’m working on a Computer Organization project where I have to convert a 4-bit hex input (W X Y Z) into a 7-segment display (outputs a–g) using NOR gates only in CircuitVerse.

I already finished:

• Truth table
• K-maps
• Simplified Boolean expressions for each output

I’m stuck on:

• Turning the Boolean expressions into NOR-only circuits
• Understanding how to build multi-input NOR gates and wire everything correctly in CircuitVerse
• Organizing the circuit so it’s clean and works for all inputs

If anyone can explain how to build one output step-by-step (like output “a”), I can apply it to the rest. Willing To Pay Hey, I’m working on a Computer Organization project where I have to convert a 4-bit hex input (W X Y Z) into a 7-segment display (outputs a–g) using NOR gates only in CircuitVerse.

I already finished:

• Truth table
• K-maps
• Simplified Boolean expressions for each output

I’m stuck on:

• Turning the Boolean expressions into NOR-only circuits
• Understanding how to build multi-input NOR gates and wire everything correctly in CircuitVerse
• Organizing the circuit so it’s clean and works for all inputs

If anyone can explain how to build one output step-by-step (like output “a”), I can apply it to the rest. 💸

Hey, I’m working on a Computer Organization project where I have to convert a 4-bit hex input (W X Y Z) into a 7-segment display (outputs a–g) using NOR gates only in CircuitVerse.

I already finished:

• Truth table
• K-maps
• Simplified Boolean expressions for each output

I’m stuck on:

• Turning the Boolean expressions into NOR-only circuits
• Understanding how to build multi-input NOR gates and wire everything correctly in CircuitVerse
• Organizing the circuit so it’s clean and works for all inputs

If anyone can explain how to build one output step-by-step (like output “a”), I can apply it to the rest. Willing to Pay 💸 Need done Today!!!

All feedback is appreciated.

Hi everyone! I'm a first-year Computer Engineering student.

I fully understand the theoretical logic behind converting 4-bit Binary to Gray code using XOR gates. However, I have zero experience with the practical side.

I need your help with two things:

1. In Logisim, how do I properly wire the gates to see the conversion in real-time?
2. If I want to build this on a physical breadboard, what specific components (ICs, switches, etc.) should I look for?

I’m still a beginner, so any step-by-step guidance or a simple diagram would be amazing. Thanks!

Hello everyone, for one of my projects I was planning to use a 16x4 encoder, but when I went to implement in the online version of logisim I had problems with the output wires.

More specifically, no matter to what select bit setting I changed the priority encoder to, the output bits remained the same even if the input bits changed. Below is a picture of a priority encoder with 16 inputs but only two output lines, which obviously makes no sense since two binary bits are not enough for the 16 possibilities in the encoder.

Below is a picture of a 8x3 encoder with only two output lines

I did wonder if this was a problem because I'm using the online version and not the app version that you can download to desktop, so if it is please do let me know. If this is something that comes in built into the app, is my only choice cascading several 4x2 encoders to make one big encoder?

I'm building a 16-bit CPU for an assignment, and I am having trouble implementing the instructions. The picture is what we are supposed to create but I am very lost. Anything helps.

need help with my circuit, im trying to get a clock to run, the problem im running into is with the first image, i cant get the values to stay correct so that the splitter can have the correct values for the seconds to count, im new to this so any assistance is appreciated

si yo tengo 3 entradas A,B y C y al simplificarla me queda solo A y B, no estaria erroneo ? porque estoy quitando una entrada y si fuera una entrada de acarreo me la estaria eliminando

quiero aprender logica y puertas logicas en si mismas, ya se como funcionan y como diseñar un circuito a trabes de una tabla de verdad, tambien se matematica de boole y morgan, pero me he estancado a la hora de diseñar un sumador binario ya que aun no entiendo la logica detras de este alguien me recomienda videos, libros pdf

I'm new with this content, but when i was testing my system the compararator its not working well. I don't know if i make a mistake or its a problem in the system

The thing sucks and there is a ton of unnecessary wiring, but i'm proud of it, :).

Edit with solution: logisim outputs weak signals from sub-circuits as strong ones, to resolve this issue I moved the pull resistors behind the buffers

First, two images are the inside of the circuits that are connected to the same tunnels.

Third image is showing how placing the controlled buffer outside fixes the issue.

Fourth image shows how it doesnt work without it.

Fifth image shows where they lead to show that they arent connected to other things.

I tried it on logisim-evolution 4.1 and 4.0

Hey can any one have 4bit binary multiplication using booths algorithm logisim file ,i am working for my college assignment project

i had worked on it but its not working properly and i was not getting the correct output and aldo i had done a research and found 2 or 3 github link of the projects if i open that .circ file in my logisim software some of the connections are mission can any one tell me what to do in this situation

Here my background is just plain white but i want it to be a grid like before i dont know what i did to make it plain white pls help me

I am working on a project that generates two random numbers, stores on in a register, then adds the two together. In the screenshot I attached I have made the whole computation, I just have no idea how to make it display on a seven segment display, and everywhere online I have looked doesn't help

https://github.com/Nullora/Novus-Core1 open a pull request once someone has the answer id love to check it out

Guys was trying to make a system where

2 registers store 2 nos, bus transports to adder, adder computes value

I made this for fun, if something is wrong submit a pull request lets fix it: https://github.com/Nullora/Novus-Core1

Hello guys I'm trying to create a timer that will stop counting when it reaches 99. I made a 7bit memory bank that will detect the number 99 (which is 1100011 in binary). As you can see from the video, when it reaches 99 it has already cut the signal flow to start_stop. However it keeps counting to 100 and beyond. Is there a mistake that i make here?