doing things on pocket calculators doesn't count. The world began with the 8008
It was developed before I started work at my refinery in 1979, but they had a homegrown fuel dispenser (gas pump billing system for inside fuel consumption of company vechiles) build around the Intel 4004 chip set. Kept working for around 20years when finally replaced with a commercial turnkey system. So some people and companies were using the 4004 chip set on their own for other then calculators.
Lefty