Describe:

File list(time 2000071117~2009121618)(Click to check if it's the file you need, and recomment it at the bottom):
  C51源程序
  .........\16sw10.c
  .........\24cxx.c
  .........\78EXXPCB.zip
  .........\93cxx.c
  .........\acm12864.c
  .........\at29c040_card.c
  .........\at29c040_Card.zip
  .........\demo1.c
  .........\e-1330.c
  .........\hd44780.c
  .........\HEXBIN.zip
  .........\ht1380.c
  .........\ht9200b.c
  .........\ht9200b.zip
  .........\Hzf.c
  .........\key.c
  .........\led.c
  .........\nostart.a51
  .........\nostart.obj
  .........\p89c51.c
  .........\p89c51.zip
  .........\P89C51RD.zip
  .........\P89COM3.zip
  .........\pc_115k.c
  .........\ps-89rx.pdf
  .........\R78EXX.bin
  .........\r89c51.c
  .........\reset.c
  .........\rp89com.c
  .........\rp89com3.bin
  .........\RP89com3.c
  .........\rw_card.c
  .........\softdog.c
  .........\soft_ad.c
  .........\soft_inf.c
  .........\sp89com.c
  .........\sp89com3.c
  .........\t6963c.c
  .........\w78exx.pdf
  .........\w78exx.zip

 [44.rar] - Specific functions, see the note inside, but also please do not amend, only make reference to
 [RegDemo20.zip] - Database operations, including basic literacy, add and delete operations
 [Keans.rar] - K means clustering algorithm using the original procedure, able to gray-scale image segmentation method according to category

 [usb_softpack.zip] - C51 s usb communication library to support the 51-compatible MCU and pdusbd12 interface chip