The RCA 501 high-speed printers
C. Eckel, D. Flechtner · 1959
The 501 high-speed printer is an output device of the RCA 501 Electronic Data Processing System. This system is fully transistorized. It is expandable in both the area of the high-speed memory and the input-output devices. In the specific case of the High-Speed Printer, this expandability takes the form of optional use of the printer mechanism either as an on-line device or an off-line device.