How much did a personal computer cost the year you were born?

The Scelbi was initially advertised in the back of an amateur radio magazine in 1974. The product would only sell about 200 units and was discontinued before the end of the decade. At about 50 pounds, IBM's 5100 Portable Computer was hardly portable by today's standards. A decade earlier, a computer with the same processing capacity would weigh about half a ton. A fully functioning Apple I computer is on display with its interfaces at Sotheby's in New York, June 8, 2012.