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2. Modified Modular Jack - Wikipedia

   en.wikipedia.org/wiki/Modified_Modular_Jack

   The Modified Modular Jack (MMJ) is a small form-factor serial port connector developed by Digital Equipment Corporation (DEC). It uses a modified version of the 6P6C modular connector with the latch displaced off-center so standard modular connectors found on Ethernet cables or phone jacks cannot accidentally be plugged in. MMJ connections are used on Digital minicomputers, such as the PDP-11 ...

3. VISCA Protocol - Wikipedia

   en.wikipedia.org/wiki/VISCA_Protocol

   It is based on RS-232 serial communications at 9600 bit/s, 8N1, no flow control typically though a DE-9 connector, but can also be on 8-Pin DIN, RJ45 and RJ11 connectors used in daisy chain configurations. [1] VISCA utilizes a serial repeater network configuration to communicate between the PC (device #0) and up to 7 peripherals (#1 through #7).

4. Modular connector - Wikipedia

   en.wikipedia.org/wiki/Modular_connector

   Cables sold as RJ11 (the name of a single-jack, not a cable) often actually use 6P4C connectors (six positions, four contacts). Two of its six possible contact positions connect tip and ring of a single telephone line, and the other two contact positions may be unused, carry a second line, or provide low-voltage power for night light or other ...

5. Telephone jack and plug - Wikipedia

   en.wikipedia.org/wiki/Telephone_jack_and_plug

   For example, telephone cables in the UK typically have a BS 6312 (UK standard) plug at the wall end and a 6P4C or 6P2C modular connector at the telephone end: this latter may be wired as per the RJ11 standard (with pins 3 and 4), or it may be wired with pins 2 and 5, as a straight-through cable from the BT plug (which uses pins 2 and 5 for the ...

6. In-system programming - Wikipedia

   en.wikipedia.org/wiki/In-system_programming

   Parallel port - large bulky cable, most computers have only one port and it may be inconvenient to swap the programming cable with an attached printer. Most laptops newer than 2010 do not support this port. Parallel port programming is very fast. Serial port (COM port) - At one time the most popular method. Serial ports usually lack adequate ...

7. Rollover cable - Wikipedia

   en.wikipedia.org/wiki/Rollover_cable

   A rollover cable (also known as a Yost cable, Cisco cable, or a console cable) is a type of null-modem cable that is used to connect a computer terminal to a router's console port. This cable is typically flat (and has a light blue color) to help distinguish it from other types of network cabling.

8. Serial port - Wikipedia

   en.wikipedia.org/wiki/Serial_port

   A male D-subminiature connector used for an RS-232 serial port on an IBM PC compatible computer along with the serial port symbol. A serial port is a serial communication interface through which information transfers in or out sequentially one bit at a time. [1]

9. 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 ...