Bill Gates celebrated Microsoft’s 50th Anniversary by sharing the source code that created the company’s foundation. The 157-page PDF available to download on Gates’ blog contains the origins of Altair Basic — a programming language interpreter for the MITS Altair 8800 microcomputer — and “remains the coolest code I’ve ever written to this day,

However, the tech giant lacks its own proprietary silicon chips and relies on other companies to produce these essential AI model components. It remains to be seen whether Microsoft’s other AI investments will be enough to uphold its legacy for another 50 years — or if it will fall behind other AI companies.

Microsoft, which turns 50 years old today (April 5), started off with a lie. In 1975, the 20-year-old Gates and 22-year-old Allen approached MITS, the electronics company behind Altair 8800, and pretended to have created software for the computer. “There was just one problem: We didn’t,” noted Gates.