A, the use of the keyboard keys control LED lights,
Requirements:
1, use the up control LED1, LED2 down control, right control LED1, LED2 fully open, the left control LED1, LED2 seated, use the up control LED1, LED2 down control, it is to point to each press a button, to turn the state of the light, such as LED1 is bright, press the up, the lights went out; Such as LED1 is quenched, press the up, the light,