The IBM 608 Transistor Calculator, a plugboard-programmable unit, was the first IBM product to use transistor circuits without any vacuum tubes and is believed to be the world's first all-transistorized calculator to be manufactured for the commercial market.[1][2]: 34 Announced in April 1955,[3][4] it was released in December 1957. The 608 was withdrawn from marketing in April 1959.[3]
- ^ Bashe, Charles J.; et al. (1986). IBM's Early Computers. MIT. p. 386.
- ^ Pugh, Emerson W.; Johnson, Lyle R.; Palmer, John H. (1991). IBM's 360 and early 370 systems. MIT Press. ISBN 0-262-16123-0.
- ^ a b IBM Archives: IBM 608 calculator
- ^ Weik, Martin H. (1955). A survey of domestic electronic digital computing systems. Aberdeen Proving Ground, Md. pp. 61–62. hdl:2027/wu.89037555299.