YouTuber Inkbox recently posted a detailed 16-minute video (embedded below) showing how he successfully created a 16-bit CPU in Microsoft Excel. The CPU runs at 3Hz and has 128KB of RAM, a 16-color 128x128 pixel display, and runs an assembly called "EXCEL-ASM16."

The CPU is built using native Excel functionality, without the need for any Visual Basic scripting or plugins. Inkbox leverages Excel's powerful formula-based capabilities that can be executed on any PC running Excel to replicate the logic gates, registers, and other components needed to simulate the underlying processor architecture.
The most impressive thing about this project is that Inkbox created the EXCEL-ASM16 assembly programming language for this Excel CPU, supporting 23 different commands for loading, storing, arithmetic operations, bitwise operations...
In the video below, the YouTuber shares in detail how to build a fully functioning CPU within the confines of Microsoft Excel. This project illustrates the basics of the internal structure of a CPU and how it works in a completely new way.
Inkbox's creativity and technical ingenuity in a fully functioning 16-bit CPU project entirely within Microsoft Excel provides a unique hands-on way to explore low-level computing concepts and highlights the versatility of Excel beyond boring spreadsheets.