How do you teach people about computers at a time when they required special cooling systems, filled rooms, and cost millions of dollars?

The 1960s was a time of great change, both culturally and technologically. There was a growing interest in “computers”, but for the reasons posed in the question above they were virtually inaccessible to the average person.

So how did they teach people about computers in the 60s? By creating clever mechanical and electro-mechanical devices that demonstrated basic computer principles and sold at a price that most could afford.