After Hours

Vintage Computer Advertisements from the late 1970s

Intecolor 3621 ad from 1979


The big selling point for Intelligent Systems’ computers was their high quality color graphics.

From the advertisement: Our new Intecolor 3621 puts the color advantage in a desk-top computer. The 13-inch screen can display 32 lines of 64 ASCII characters, as well as plot graphics on a 128 x 128 grid—in eight brilliant colors.

Images compiled by Greg Shultz for TechRepublic

By Greg Shultz

Greg Shultz is a freelance Technical Writer. Previously, he has worked as Documentation Specialist in the software industry, a Technical Support Specialist in educational industry, and a Technical Journalist in the computer publishing industry.