使用国产CH341A芯片实现USB转串口，完全兼容AVR JTAGICE，可以自动升级。 支持芯片: ATmega16(L), ATmega162(L), ATmega169(L or V), ATmega32(L), ATmega323(L), ATmega64(L), ATmega128(L). 原理图还附加了RS232接口，可以方便用户自主选择串口或USB下载程序。 还附加有可自动升级的HEX文件,The use of domestically produced CH341A ch

The AT89C2051/ATtiny2313 evaluation board is suited well for building and testing microcontroller circuits. You can either use an AT89C2051 or an ATtiny2313, both microcontrollers are almost pincompatible, just the reset pin has different polarity. T