Tandy TRS-80 model 1, 4k RAM. Saw it in a shop on way home from school, jaw dropped, had no idea what it could do but needed to find out, worked arse off in sum

Tandy TRS-80 model 1, 4k RAM. Saw it in a shop on way home from school, jaw dropped, had no idea what it could do but needed to find out, worked arse off in summer job, & bought one. Programmed via hand-assembled Z80 using instruction table photocopied from a library book. It was some years before I knew of anyone else actually owning a computer.