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(VESA Display Data Channel) A VESA standard communications channel between the display adapter and monitor. The DDC is used to pass Extended Display Identification Data (EDID), which is stored in the monitor and describes its characteristics (vendor name, serial number, frequency range, etc.).
DDC requires an additional wire in the cable. The first level implementation (DDC1) provides a unidirectional channel that lets the monitor inform the host of its abilities. A second bi-directional level (DDC2) allows the host to adjust the monitor.
For example, the monitor's switch settings could be put into a software control panel.
TTL cable (ie VGA cable) is the standard type used to output to your monitor. It has a sub D15 connector (vs BNC type with 5).
"Be who you are and say what you feel, because those who mind don't matter, and those who matter don't mind." -- Dr. Seuss
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