Oh boy, is it really 30 years since we had wobbly RAM packs and Horace goes Skiing?
A sharp quote about the ZX80: With an unusable keyboard and a quirky BASIC, this machine discouraged millions of people from ever buying another computer.
http://computermuseum.50megs.com/brands/zx80.htm
I loved that machine. Most memorable was that as you used up nearly all of the memory, the number of rows displayed on screen started to reduce.