went to computer camp in the early 90s (yes i was the stereotype) and we learned basic programming on radio shack computers (the monitor/keyboard combined type - i can't remember the name)
then i moved on to qbasic and started programming basic type text adventure games with inventory management in my spare time :)
edit: looking it up, i believe it was the trs-80. it looks familiar but i'm not 100% positive. could have also been the model ii