File list (Check if you may need any files):
4 Relay
.......\C
.......\.\RALAY
.......\.\RALAY.C
.......\.\RALAY.LST
.......\.\RALAY.M51
.......\.\RALAY.OBJ
.......\.\RALAY.Opt
.......\.\RALAY.Uv2
.......\.\RALAY.hex
.......\.\RALAY.lnp
.......\.\RALAY.plg
.......\.\RALAY_Opt.Bak
.......\.\RALAY_Uv2.Bak
.......\.\STARTUP.A51
.......\.\STARTUP.LST
.......\.\STARTUP.OBJ
.......\Thumbs.db
.......\datasheet-相关芯片手册
.......\......................\74HC14.pdf
.......\......................\ULN2003A.pdf
.......\接线图.jpg
.......\汇编
.......\....\RALAY-asm
.......\....\RALAY-asm.ASM
.......\....\RALAY-asm.LST
.......\....\RALAY-asm.M51
.......\....\RALAY-asm.OBJ
.......\....\RALAY-asm.Opt
.......\....\RALAY-asm.Uv2
.......\....\RALAY-asm.hex
.......\....\RALAY-asm.lnp
.......\....\RALAY-asm.plg
.......\....\RALAY-asm_Opt.Bak
.......\....\RALAY-asm_Uv2.Bak
.......\继电器电路图.jpg