AVR单片机(AT90S2313)制作的数显直读式电容表，

具有能测量小至1pF的电容，量程广（1pF----470uF），

能自动换挡，使用方便等优点

硬件电路非常简单。该电路采用9V叠层电池供电，功耗较小，

整机工作电流仅32mA左右。

-AVR microcontroller (AT90S2313) produced by digital direct reading capacitance meter has to measure small capacitance of 1pF, range widely (1pF---- 470uF), automatically shifting, ease to use hardware circuit is very simple. The circuit uses 9V laminated battery-powered, low power consumption, the whole operating current of only 32mA or so.