This repository contains Logisim circuit designs for a basic computer architecture with multiprogramming and ROM. The circuits are designed to simulate the basic functionality of a computer, including the control unit, ALU, registers, and memory. Additionally, multiprogramming is implemented to allow the computer to execute multiple programs simultaneously.
To use the circuit designs, you will need to download and install Logisim. Once Logisim is installed, you can open any of the .circ
files in the repository to view and simulate the circuits.
![](https://private-user-images.githubusercontent.com/79409258/238174053-6f7087f0-ae08-4526-823f-976042cae2a2.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.-2d9PLhEgvu1mhQGQnZFovTnMCRxYgY3aNvm3FJw4PA)
![](https://private-user-images.githubusercontent.com/79409258/238174054-ad126c3e-dfe8-4366-b121-a82764e769de.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.5iuFE985svn22WGr7xLQqoIlAWcIcMmoz-Y8QutmbGs)
![](https://private-user-images.githubusercontent.com/79409258/238174057-1b5da71e-e601-4e48-b0b5-f74c159ce621.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.ZvKtsYZHyeM8qLqwlcNLdyT_TaLPWIMIbwk6aBdpE3E)
![](https://private-user-images.githubusercontent.com/79409258/238174058-b9295a5e-0bdd-4472-a8b2-0847af7f8fee.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.Gjqvpclhmg_QuVBctYpTb0aY2cDLoapprkkDUpJzfZ0)
![](https://private-user-images.githubusercontent.com/79409258/238174061-41968c37-1d43-4d7e-b9ee-a5f3b9fff3ea.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.1kdcauXx8tB_2lG3FrW80AO8kGIC_Uk15h41kkdIn0U)
![](https://private-user-images.githubusercontent.com/79409258/238174063-77ffa4b8-31d1-4d2e-bc60-4de5ef613d2f.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.BwUxPApLbNtQVSd3VoQcw7u22_rPOF-SVj52JWv2Z5Y)
![](https://private-user-images.githubusercontent.com/79409258/238174064-7cb3af43-2d1c-4b14-99eb-07cf8418e209.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.TxVXqeEzKuxP7nLvIAGgBHzQaCMPlmu4cykRWD-_IrY)
![](https://private-user-images.githubusercontent.com/79409258/238174065-44075d09-de67-4238-83a6-0e7d0e818fda.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.ZUp9cJi4sNUJ_TYxIPvsLYmThVVnzwU0f3y8RDdJIuc)
![](https://private-user-images.githubusercontent.com/79409258/238174067-351e33ee-8ff3-45fd-a35c-7d9e6a2e4a97.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.TqHFFPXWo75VGdJujfamCPacr9lYgGlfKpCBCgkm_LU)
![](https://private-user-images.githubusercontent.com/79409258/238174069-228af83e-9352-43a2-97f6-f355910f348c.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.jBzxfiI-XdiIzTzVxE7yw8KpbVwceCgPrYF2q_PGoXE)
![](https://private-user-images.githubusercontent.com/79409258/238174071-cf937c77-12b0-423d-85aa-a4b79265f864.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.9P-72HX6Ms0_SAt7Y9QIlqefQLKW0OiJFSpZlVC5dtU)
- Download this module to learn about many more circuits...