stc 60s2测频，ad，1602液晶显示，串口
....................................\main.c
....................................\main.LST
....................................\main.__i
....................................\pca
....................................\pca.c
....................................\pca.hex
....................................\pca.lnp
....................................\pca.LST
....................................\pca.M51
....................................\pca.OBJ
....................................\pca.plg
....................................\pca.uvopt
....................................\pca.uvproj
....................................\pca_uvopt.bak
....................................\pca_uvproj.bak
....................................\STARTUP.A51
....................................\STARTUP.LST
....................................\STARTUP.OBJ