The so-called matrix the keyboard is to point to: use article m I/O it quad input port, with n I/O wire column input port, to control mXn a keyboard, each keyboard has its own coordinates (m, n).

4_矩阵键盘\STARTUP.A51
..........\STARTUP.lst
..........\STARTUP.obj
..........\矩阵键盘
..........\矩阵键盘.c
..........\矩阵键盘.hex
..........\矩阵键盘.LST
..........\矩阵键盘.M51
..........\矩阵键盘.OBJ
..........\矩阵键盘.Opt
..........\矩阵键盘.plg
..........\矩阵键盘.Uv2
..........\矩阵键盘_Opt.Bak
4_矩阵键盘

• 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．