KeilC development through 8255 to 51 4* 4 external keyboard control. Keys were 0-9 and above and below, coupled with canceled.

Packet : 714771894x4_keyboard.rar filelist
4x4_KeyBoard
4x4_KeyBoard\8255A.LST
4x4_KeyBoard\keyboard.c
4x4_KeyBoard\8255A.C
4x4_KeyBoard\8255A.H
4x4_KeyBoard\Keyboard_Uv2.Bak
4x4_KeyBoard\Keyboard.Uv2
4x4_KeyBoard\main.c
4x4_KeyBoard\8255A.OBJ
4x4_KeyBoard\keyboard.h
4x4_KeyBoard\Keyboard.M51
4x4_KeyBoard\Keyboard.hex
4x4_KeyBoard\Keyboard.plg
4x4_KeyBoard\keyboard.__i
4x4_KeyBoard\main.__i
4x4_KeyBoard\main.LST
4x4_KeyBoard\main.OBJ
4x4_KeyBoard\keyboard.LST
4x4_KeyBoard\keyboard.OBJ
4x4_KeyBoard\Keyboard
4x4_KeyBoard\Keyboard_Opt.Bak
4x4_KeyBoard\Keyboard.Opt

• We are an exchange download platform that only provides communication channels. The downloaded content comes from the internet. Except for download issues, please Google on your own.
• The downloaded content is provided for members to upload. If it unintentionally infringes on your copyright, please contact us.
• Please use Winrar for decompression tools
• If download fail, Try it againg or Feedback to us.
• If downloaded content did not match the introduction, Feedback to us，Confirm and will be refund.
• Before downloading, you can inquire through the uploaded person information

Nothing．