My first was a ZX-80, my second was a ZX-81 with 1K memory. My Dad (who worked for ICL at the time) came home one day with a 2K chip, suddenly my horizons were expanded 100%. A few weeks later over a weekend he built me a 16K RAM Pack, giving me 18K RAM ... the limits seemed endless.

Peeking and Poking memory locations was the height of fashion back then :)

--
Barbie | Birmingham Perl Mongers | http://birmingham.pm.org/