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An IEEE 1284 36-pin female on a circuit board. In the 1970s, Centronics developed the now-familiar printer parallel port that soon became a de facto standard.Centronics had introduced the first successful low-cost seven-wire print head [citation needed], which used a series of solenoids to pull the individual metal pins to strike a ribbon and the paper.
Mini-Centronics 36-pin male connector (top) with Micro ribbon 36-pin male Centronics connector (bottom) The Apple II Parallel Printer Port connected to the printer via a folded ribbon cable; one end connected to the connector at the top of the card, and the other end had a 36-pin Centronics connector. In computing, a parallel port is a type of ...
This connector is similar to the 36-pin connector used by Centronics for the parallel interface on their printers, thus the connector became popularly known as "Centronics SCSI" or "CN-50". It is also referred to as a "SCSI-1 connector"; since many connectors have been used for SCSI-1, this can be confusing.
This size, with 36 pins and bail locks, is also known as a Centronics connector because of its introduction by Centronics for use with the parallel port of printers, and is standardized as IEEE 1284 type B. Other connectors of this size are also called Centronics connectors. The smaller size has 0.050 inch (1.27 mm) pitch.
Centronics Data Computer Corporation was an American manufacturer of computer printers, now remembered primarily for the parallel interface that bears its name, the Centronics connector. History [ edit ]
Two RS-232C/RS-423 serial ports using 25-pin D connectors; A 2 MB/s Centronics-compatible parallel port using a 25-pin D connector; Standard mini DIN-8 connector for Sun keyboard/ Sun mouse; External ultra wide 68-pin SCSI connector; 10/100 BASE-T Ethernet using the HME adapter; IEC mains input connector
RS232 port: Configured as DTE with 0-12V swing. Parallel port: Connects to Centronics printer with adapter. Internal buffer: 1800 bytes. Power supply read: 9 - 12 V at 800 mA. Video output: Composite video: negative sync, 1V p-p into 75 ohms, 50 Hz frame, 15625 Hz line frequency.
a parallel port for Centronics-type printers or general purpose I/O. This was provided by a Rockwell 6522 Versatile Interface Adapter, which was also the source of timer interrupts. 4 channel analog/audio output via an 8 bit DAC and multiplexor. software audio/analogue input via the DAC and a comparator. a PC/XT keyboard interface.