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  2. RS-232 - Wikipedia

    en.wikipedia.org/wiki/RS-232

    Many RS-232 driver chips have inbuilt charge pump circuitry to produce the required voltages from a 3 or 5 volt supply. RS-232 drivers and receivers must be able to withstand indefinite short circuits to the ground or to any voltage level up to ±25 volts. The slew rate, or how fast the signal changes between levels, is also controlled.

  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. VGA connector - Wikipedia

    en.wikipedia.org/wiki/VGA_connector

    The Video Graphics Array (VGA) connector is a standard connector used for computer video output. Originating with the 1987 IBM PS/2 and its VGA graphics system, the 15-pin connector went on to become ubiquitous on PCs, [1] as well as many monitors, projectors and HD television sets.

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

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

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  6. D-subminiature - Wikipedia

    en.wikipedia.org/wiki/D-subminiature

    These connectors had the same number of pins as the above DE-15 connectors, but used the more traditional pin size, pin spacing, and size shell of the DA-15 standard connector. "VGA adapters" (i.e. DA-15 to DE-15 dongles) were available but sometimes monitor-specific, or they needed DIP switch configuration, as the Macintosh's monitor sense ...

  7. 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]

  8. HDBaseT - Wikipedia

    en.wikipedia.org/wiki/HDBaseT

    HDBaseT connectors at a presentation and collaboration system from WolfVision. HDBaseT is a consumer electronic (CE) and commercial connectivity standard for transmission of uncompressed ultra-high-definition video, digital audio, DC power, Ethernet, USB 2.0, and other control communication (such as RS-232 and Consumer IR) over a single category cable (Cat 5e or better) up to 100 m (328 ft) in ...

  9. Modular connector - Wikipedia

    en.wikipedia.org/wiki/Modular_connector

    The first types of small modular telephone connectors were created by AT&T in the mid-1960s for the plug-in handset and line cords of the Trimline telephone. [1] Driven by demand for multiple sets in residences with various lengths of cords, the Bell System introduced customer-connectable part kits and telephones, sold through PhoneCenter stores in the early 1970s. [2]