Not sure if this counts, but I wrote my first program in 1972, when I was 8 years old. On an old mechanical teletype, connected via an acoustically coupled mode

Not sure if this counts, but I wrote my first program in 1972, when I was 8 years old. On an old mechanical teletype, connected via an acoustically coupled modem to a mainframe in the other end of the city. I only saw the BASIC interpreter, but my father told that they were doing some calculations abroad, even in the US, where he could get cheaper night time when it was daytime in Finland. Edit: Those remote jobs were most likely batch jobs, and I am not sure how they got the stuff over, may not have been over a network connection.