Multimedia center control system, adopt touch-key design, usage time is up to 1 million. Intelligent preview, featured with human controlling users can preview and edit before shooting to projector(s). Signal conveniently test, when equipment (visual presenter, PC, notebook/laptop) signals get into CCS, central control system will test that signal(s) existed already or not, if not, it can not operate. CCS no need to open to get through when PC signal comes to CCS, it will continually connect with monitor. Intelligent controlling, easy to use when turn it on, CCS can be operated immediately, meanwhile, screen will be down. Users are unnecessary to wait when turn it off , projector will be delayed off, and screen will be up automatically, and with infrared decoding function. (B type has no infrared decode function). Secretly infrared decoding function, no need to be equipped with special decoders, easy to use and reliable to store ( B type has no this function). Multi-ports 1 independent port for programming RS-232, 1 port for PC RS-232 connection, 3 -port inputs and 2-port outputs RGB with long-cable switch (with audio synchronism switch, and previewing function), 1 port for projector output, 1port for screen controlling output, 2-port inputs and 2-port outputs with video-switch (B type has no this function), 2 ports for programming infrared decoding function (B type has no this function).