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2. IEEE 1284 - Wikipedia

   en.wikipedia.org/wiki/IEEE_1284

   An IEEE 1284 36-pin male micro ribbon printer cable connection. The computer side normally uses a DB-25 port instead of this connector. IEEE 1284, also known as the Centronics port, is a standard that defines bi-directional parallel communications between computers and other devices.

3. SCSI connector - Wikipedia

   en.wikipedia.org/wiki/SCSI_connector

   Furthermore, DB-25s were commonly used for RS-232 serial cables and also to connect parallel printers, meaning that users might accidentally try to use completely inappropriate cables, since the printer and serial cables would fit the connector properly and be hard to visually distinguish.

4. Parallel port - Wikipedia

   en.wikipedia.org/wiki/Parallel_port

   Logical parallel port 3: I/O port 0x278, IRQ 5 (dedicated IO cards or using a controller built into the mainboard) If no printer port is present at 0x3BC, the second port in the row (0x378) becomes logical parallel port 1 and 0x278 becomes logical parallel port 2 for the BIOS. Sometimes, printer ports are jumpered to share an interrupt despite ...

5. MacEnhancer - Wikipedia

   en.wikipedia.org/wiki/MacEnhancer

   The rear ports of a MacEnhancer; from left to right, one DB-25 parallel port, two DB-25 serial ports, one DE-9 RS-422 port, an 8-pin mini-DIN (for connecting to the Macintosh), and the DC power jack The MacEnhancer is an expansion box less than 12 inches (30 cm) wide, 4 inches (10 cm) deep, and 1 inch (2.5 cm) high. [ 6 ]

6. D-subminiature - Wikipedia

   en.wikipedia.org/wiki/D-subminiature

   For example, DB-25 denotes a D-sub with a 25-position shell size and a 25-position contact configuration. The contacts in each row of these connectors are spaced 326/3000 of an inch apart, or approximately 0.1087 inches (2.76 mm), and the rows are spaced 0.112 inches (2.84 mm) apart; the pins in the two rows are offset by half the distance ...

7. Parallel SCSI - Wikipedia

   en.wikipedia.org/wiki/Parallel_SCSI

   SCSI-1 features an 8-bit parallel bus (with parity), running asynchronously at 3.5 MB/s, or 5 MB/s in synchronous mode, and a maximum bus cable length of 6 metres (20 ft), significantly longer than the 18 inches (0.46 m) limit of the ATA interface also popular at the time.

8. Null modem - Wikipedia

   en.wikipedia.org/wiki/Null_modem

   A null modem adapter. Null modem is a communication method to directly connect two DTEs (computer, terminal, printer, etc.) using an RS-232 serial cable.The name stems from the historical use of RS-232 cables to connect two teleprinter devices or two modems in order to communicate with one another; null modem communication refers to using a crossed-over RS-232 cable to connect the teleprinters ...

9. EIA-530 - Wikipedia

   en.wikipedia.org/wiki/EIA-530

   Currently known as TIA-530-A, but often called EIA-530, or RS-530, is a balanced serial interface standard that generally uses a 25-pin connector, originally created by the Telecommunications Industry Association. Finalized in 1987 (revision A finalized in 1992 [1]), the specification defines the cable between the DTE and DCE devices.