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Display Data Channel (DDC) is a collection of protocols for digital communication between a computer display and a graphics adapter that enable the display to communicate its supported display modes to the adapter and that enable the computer host to adjust monitor parameters, such as brightness and contrast.
A classic motherboard with on-board integrated graphics processors, a discrete graphics card can be installed at a PCI slot. GPU switching is a mechanism used on computers with multiple graphic controllers.
A second screen involves the use of a computing device to provide a different viewing experience for content on another device. The term commonly refers to the use of such devices to provide interactive features, like posts on social media platforms that take input from the audience during a broadcast, such as a television program .
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There is no HID emulation or no EDID emulation/feeding to all connected systems. In addition, they're limited to having 2 systems connected to it. And only can control one monitor (the monitor itself only) with the built-in KVM switch. The built-in KVM switch CAN not support multi-monitor switching and control via it. [citation needed]
Refresh rate is (in CRTs) the number of times in a second that the display is illuminated (the number of times a second a raster scan is completed). In LCDs it is the number of times the image can be changed per second, expressed in hertz (Hz). Determines the maximum number of frames per second (FPS) a monitor is capable of showing.
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Consumer Electronics Control (CEC) is a feature of HDMI designed to control HDMI connected devices [1] [2] by using only one remote controller; so, individual CEC enabled devices can command and control each other without user intervention, for up to 15 devices.