MCU development board to do the keyboard USB development board a total of eight buttons, functions, respectively: K1: Left Ctrl key K2: the left Shift key K3: left Alt key K4: 0 key K5: 1 key K6: 2 key K7: Caps Lock key K8: Num Lock key button function test: Press the K1 and K2 at the same time can switch the input method, which is two keys on the keyboard functions the same. K7 can be locked open capital letters at the same time turn on LED2. K8 is a small numeric keypad lock, when the numeric keypad open, LED1 lights when available K4, K5, K6 digital input. Please pay attention to the LED board EDN will be with your own LED lights on the keyboard simultaneously. Regardless of the keyboard by switching哪块true. Hold down the key switch, however, may result between the two LED keyboard out-of-step.

SourceCode
..........\AT89X52.H
..........\config.h
..........\Key.c
..........\Key.h
..........\Key.LST
..........\Key.OBJ
..........\keyboard.h
..........\LED.h
..........\My_type.h
..........\PDIUSBD12.h
..........\UART.c
..........\UART.h
..........\UART.LST
..........\UART.OBJ
..........\USB.H
..........\UsbKeyBoard
..........\UsbKeyBoard.c
..........\UsbKeyBoard.hex
..........\UsbKeyBoard.lnp
..........\UsbKeyBoard.LST
..........\UsbKeyBoard.M51
..........\UsbKeyBoard.OBJ
..........\UsbKeyBoard.Opt
..........\UsbKeyBoard.plg
..........\UsbKeyBoard.Uv2
..........\UsbKeyBoard_Opt.Bak
..........\UsbKeyBoard_Uv2.Bak

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