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  2. RS-232 - Wikipedia

    en.wikipedia.org/wiki/RS-232

    A DB-25 connector as described in the RS-232 standard Data circuit-terminating equipment (DCE) and data terminal equipment (DTE) network. In telecommunications, RS-232 or Recommended Standard 232 [1] is a standard originally introduced in 1960 [2] for serial communication transmission of data.

  3. 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 ...

  4. D-subminiature - Wikipedia

    en.wikipedia.org/wiki/D-subminiature

    Comprehensive DB-25 wiring diagrams: Tascam, Apple, SCSI, etc. "Pinouts by Connector". Pinouts. A list of common computer connectors, including most D-sub. "9 pin D-SUB female connector diagram and applications". Pinouts. Archived from the original on 2007-09-01 Devices with DE-9 connectors. "D-sub 9 Connector Pinout".

  5. Data Carrier Detect - Wikipedia

    en.wikipedia.org/wiki/Data_Carrier_Detect

    Data Carrier Detect (DCD) or Carrier Detect (CD) is a control signal present inside an RS-232 serial communications cable that goes between a computer and another device, such as a modem. This signal is a simple "high/low" status bit that is sent from a data communications equipment (DCE) to a data terminal equipment (DTE), i.e., from the modem ...

  6. File:DE9 D-subminiature RS-232 pinout.svg - Wikipedia

    en.wikipedia.org/wiki/File:DE9_D-subminiature_RS...

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  7. Data Terminal Ready - Wikipedia

    en.wikipedia.org/wiki/Data_Terminal_Ready

    Data Terminal Ready (DTR) is a control signal in RS-232 serial communications, transmitted from data terminal equipment (DTE), such as a computer, to data communications equipment (DCE), for example a modem, to indicate that the terminal is ready for communications and the modem may initiate a communications channel.

  8. Serial port - Wikipedia

    en.wikipedia.org/wiki/Serial_port

    A male DE-9 connector on an IBM PC compatible computer (with serial port symbol) used for an RS-232 serial port A female DE-9 connector on an RS-232 cable.. A serial port is a serial communication interface through which information transfers in or out sequentially one bit at a time. [1]

  9. Floppy disk drive interface - Wikipedia

    en.wikipedia.org/wiki/Floppy_disk_drive_interface

    Floppy drive connector pinout (host controller as a reference) Pin number Abbreviation Description Notes Type 2 DENSEL Density Select 1=Low/0=High: The default use is 0: Output 4 RSVD Reserved No connection or connect to the ground 6 RSVD Reserved No connection or connect to the ground 8 INDEX# Index 0=Index Input 10 MOTEA# Motor A Enable