AT89S52-source example of the development of single-chip, to achieve single-chip features include hardware initialization, delay subroutine, check functional keypad and so on.

Altayso_51_080219_Perfect_Version
.................................\Altayso.c
.................................\Altayso.plg
.................................\Altayso_51.Opt
.................................\Altayso_51.Uv2
.................................\Driver_CD4052_V3.0.h

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