Computer programming was a nationally available subject in secondary schools in the UK in the mid '70s. I co-wrote a noughts and crosses program to run on a Bu

Computer programming was a nationally available subject in secondary schools in the UK in the mid '70s. I co-wrote a noughts and crosses program to run on a Busicom in 1973; and continued programming at university ('74-'77). See, inter alia, https://en.wikipedia.org/wiki/Cesil https://en.wikipedia.org/wiki/Cesil, https://en.wikipedia.org/wiki/Busicom https://en.wikipedia.org/wiki/Busicom.