I win (but I am older) ZX-80! (and yes you had to actually solder components to get the thingy be able to run a sort of pong in 1 KB). The thing that remained

I win (but I am older) ZX-80! (and yes you had to actually solder components to get the thingy be able to run a sort of pong in 1 KB). The thing that remained stuck in my memory (common to all Sinclair users) is the sound of the cassette loading and (many years later) that of modems trying to connect to this or that BBS.