Multifunctional keyboard

The utility model discloses a multifunctional keyboard, including key disc plate shell, the air exit is installed at the rear of key disc plate shell, a controling keyboard is installed to one side of the top of key disc plate shell, the backup pad is installed in the place ahead of key disc plate shell, the projecting apparatus is installed to the intermediate position of key disc plate shell, the PCB circuit board is installed in the place ahead of projecting apparatus, adjust knob is installed to the top of fixed plate, the second in command is installed to the opposite side of key disc plate shell, install the open -close plate connector between a controling keyboard and the 2nd controling keyboard, the first in command is installed to one side of open -close plate connector, the internally mounted of open -close plate connector has the slide. The utility model discloses an air exit is installed at the rear, can the protection key dish through it, and avoid the pollution of dust to device life has been in