My first computer - I still have it although it needs restoration. We didn't know at the time it was so limited because there was nothing to compare it to.

The author of the programming manual - Steve Vickers - could be thought of both the first and last person to formally teach me computer science, since I eagerly followed the entire manual back in 1981, and then 15 years later I took his notoriously difficult and impenetrable course on Mathematical Structures at university.