Eldo Koenig with analog computer, circa 1950s
“This is the one computer you can take with you. Announcing the Donner 3500. Smallest Analog Computer Ever Made” – 1960’s ad
Professor Vannevar Bush working on his product integraph….an early analog computer…MIT 1927
Analog Computing Machine in the Fuel Systems Building, Lewis Flight Propulsion Laboratory, Cleveland Ohio, September 28th, 1949.