Keyboard with projection device

A keyboard comprising:

• a frame board;
• a base board complimentarily secured to the frame board;
• a membrane circuit board disposed in a space defined by the frame board and the base board;
• a support board disposed on the membrane circuit board and including a plurality of holes;
• a switch board disposed on the support board and including a plurality of switches disposed in the holes respectively;
• a plurality of keys disposed on the switch board;
• a lithium battery disposed on the base board;
• a control circuit board disposed on the lithium battery;
• a projection device disposed in the space defined by the frame board and the base board;
• a rectangular groove disposed on the right side of the frame board;
• a rectangular outer screen disposed on the groove;
• an inner screen disposed on the control circuit board and below the outer screen;
• a plurality of lights disposed between the outer screen and a rear edge of the frame board;
• a transparent cover disposed on the lights;
• a plurality of vent-holes disposed to the left of the lights wherein the projection device is disposed below the vent-holes;
• a plurality of key holes disposed between the vent-holes and the outer screen;
• a plurality of first function keys projecting out of the plurality of key holes respectively;
• an opening disposed between the lights and the right side of the frame board;
• a second function key projecting out of the opening;
• a recess disposed on the right side of the base board with the lithium battery disposed therein;
• a projection hole disposed on the rear edge of the frame board and aligned with the projection device;
• and
• a port disposed on the right side of the frame board.