My Dad had one of those PDT-11/150 as his "personal computer". It ran RT-11, had two 8" floppy drives. The CPU box was about the size of a countertop microwave

My Dad had one of those PDT-11/150 as his "personal computer". It ran RT-11, had two 8" floppy drives. The CPU box was about the size of a countertop microwave oven. He had a video terminal, and a printing terminal (LA36 DECwriter II) connected to it. I'm gonna guess late 70s.