Digital Equipment Corporation

Digital VT240 Terminal
Digital VAXstation 3100
Digital Alphaserver 1000
Digital PDP-11/34a

Digital Equipment Corporation is interesting to me because they were so important to shaping the computing world, but most people not interested in tech have never heard of them. 

DEC was out of business by the time I started using computers, so I never experienced any of their computers until I got some of my own.