Imagesource: https://cpu.visualrealmsoftware.com/

Troy Schrapel should be a well known constant to almost everyone, who built Ben Eater's 8-bit computer.

Troy not only built the whole thing himself, he also extended the machine. But more importantly, he has implemented a realistic emulator and assembler in Javascript for the browser.

His project is everything but brand new, but it's super cool. Not only does the emulator look like Ben's original breadboard collection, you also get the full ensemble of BlinkenLights!

The assembler implements a minimal instruction set, and you can either study Troy's examples, or write code yourself, assemble it, and run it directly on the emulator.

Interesting for those who want to understand how a CPU actually works, and everyone else in love with blinking LEDs.