jan 1, 1975 - PLATO, a computer-assisted instruction system was in place at nearly 150 grammar schools, high schools, colleges and universities, and military installations.
Description:
By Jason Scott [CC BY-SA 3.0 us (http://creativecommons.org/licenses/by-sa/3.0/us/deed.en)], via Wikimedia CommonsAdded to timeline:
Date:
jan 1, 1975
Now
~ 50 years ago