Excel is XL (40)
A talk I gave for Excel’s 40th anniversary about the history behind the first version of Microsoft Excel, along with a BBC Witness History interview about the same story.
mckoss.com | Mike Koss
Recent content on mckoss.com | Mike Koss
Latest posts
Vibe Coding a Morse Code News Practice Page
I vibe coded a small Morse code practice page that turns current news headlines into CW audio, then linked it up with a couple of older Morse code reference tools for ham radio contacts and visualizing the code.
Whidbey Island Dashboard
We recently bought a vacation home on Whidbey Island — and I turned a
spare TV into an ambient dashboard showing tides, weather, and ferry
schedules. It's free to use at whidbey-dashboard.mckoss.com.
 

The Paper Enigma
This paper simulator of a German Enigma machine is 100% compatible with the
real thing; you can send and receive messages between the Paper Enigma and the
WWII-era cryptography machine.
Revamping mckoss.com
The history of mckoss.com and it's conversion to a statically generated
web site.