Quote Originally Posted by Henry Rifle
Our main computer was an IBM 1620 with a whole 16K (that's K, not M) of memory. .
Hard to imagine isn't it Jack. My first job after the USAF (1970) was as a production expediter at Teledyne. We were making guidance computers for the Atlas Centaur missles. We hand wired a memory board (thin gauge copper wire through ferrite rings, if I remember correctly, on a board about 1' sq), also a mere 16k! The enclosure was a clamshell affair milled from solid billet aluminum.

Anyway, very interesting and revealing responses. Thanks folks.