Around 2001 I made a pedal from Radio Shack parts and connected it to the Backspace key on an IBM Model M keyboard. Why Backspace? It was a gift for a friend w

Around 2001 I made a pedal from Radio Shack parts and connected it to the Backspace key on an IBM Model M keyboard. Why Backspace? It was a gift for a friend who had what we called Rusty Degenerative Typing Syndrome. His typo rate was just terrible. The pedal did not improve his typing error rate but it night have saves hid friends a lot of contusion.