详细解说了atmel系列单片机下的80c52 单片机的最小系统设计，以及所需的元件。-A detailed explanation of the series of microcontroller atmel microcontroller 80c52 under the minimum system design, and the necessary components.

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The AVR is a modified Harvard architecture 8-bit RISC single chip microcontroller which was developed by Atmel in 1996. The AVR was one of the first microcontroller families to use on-chip flash memory for program storage, as opposed to one-time prog

51单片机核心资料，包括原理图，封装尺寸等等，对那些PCB制板的人来说很重要-51 PDF