Gates and Allen complete BASIC and license it to their first customer. MITS, based in Albuquerque, New Mexico. BASIC is the first language written for a PC. Bill Gates and Paul Allen license their newly written BASIC to MITS, their first customer. This is the first computer language program written for a personal computer

Bill Gates' and Paul Allen's BASIC officially ships as version 2.0 in both 4k and 8k editions. Allen and Gates get a licensing agreement for BASIC. Bill Gates and Paul Allen sign a licensing agreement with MITS, for their implementation of the BASIC language. Gates and Allen receive US$3,000 immediately, with royalties of $30 per copy of 4K BASIC, and $35 for 8K BASIC