3 ms·
My first touchtone phone. Groundbreaking. https://cdn.hackaday.io/images/6408581692554721319.jpg https://cdn.hackaday.io/images/6408581692554721319.jpg
by mikequinlan 3y ago
My first touchtone phone. Groundbreaking.
https://cdn.hackaday.io/images/6408581692554721319.jpg https://cdn.hackaday.io/images/6408581692554721319.jpg