September 16th, 2025 marks the 50th anniversary of when MOS Technology unveiled the MCS6501 microprocessor, MCS6502 microprocessor, and MCS6530 ROM-RAM-I/O-Timer chips at 24th Annual Western Electronic Show and Convention (WESCON) in San Francisco, CA. WDC would like to take a moment to celebrate this milestone and share a few of the many stories behind this technology dear to so many of us.
