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Electronics news

Computer based on logic elements

Software engineer Joseph Naberhaus set out to build his own computer based on logic gates.

He used integrated circuits from the 7400 series, including AND, OR, NOT, NAND, and XOR logic elements. He assembled about 800 of these elements and used flash memory for programs.

The developer created 10 modules, each performing a specific task, and then integrated them into the computer. Integrating the modules was the most difficult part of the job. Noise became another problem and the author had to make some modifications to the power supply.

Joseph developed his own assembly language that compiles into 24-bit machine language. Using machine language allowed for a richer instruction set and simplified implementation. The computer has limited capabilities, with 256 lines of program memory and 256 bytes of RAM. But, performance was not the main goal of the project, rather the developer's main goal was to expand his knowledge.

Video and on the manufacturer's YouTube channel.