The NCR 304, announced in 1957, first delivered in 1959, was National Cash Register (NCR)'s first transistor-based computer. The 304 was developed and manufactured in cooperation with General Electric, where it was also used internally.
Its follow-on was the NCR 315.
- Castanias, R. P., and J. E. Sherman. "Review of Computer Progress in 1957" IRE Transactions on Electronic Computers 1 (March 1958), p. 65
- Enterprise, I. D. G. (1985-03-18). Computerworld. IDG Enterprise. p. 73.
- Krickx, Guido Armand Marie Jules (1988). Historical evidence on the evolution of vertical exchange mechanisms: examples from the computer systems industry. UCLA.
- Ceruzzi, Paul E. (2003). A History of Modern Computing. MIT Press. p. 66. ISBN 9780262532037.
- Gandy, A. (2012-11-30). The Early Computer Industry: Limitations of Scale and Scope. Springer. p. 93. ISBN 9780230389113.