This a C51 microcontroller controls four relay the source code, which has all the source code and circuit diagram, developed when I am workig at Guangzhou Sienox.

datasheet-相关芯片手册
......................\74HC14.pdf
......................\ULN2003A.pdf
汇编
....\RALAY-asm
....\RALAY-asm.ASM
....\RALAY-asm.hex
....\RALAY-asm.lnp
....\RALAY-asm.LST
....\RALAY-asm.M51
....\RALAY-asm.OBJ
....\RALAY-asm.Opt
....\RALAY-asm.plg
....\RALAY-asm.Uv2
....\RALAY-asm_Opt.Bak
....\RALAY-asm_Uv2.Bak
继电器电路图.jpg

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