低功耗、四路、12位、电压输出DAC，串行接口 max525的avr驱动程序-Low-power, four-way, 12-bit, voltage output DAC, serial interface max525 driver of avr

Complete project of a voltage DAC (analog to digital converter) with a two digit seven segment display using Atmel AVR AT90S2313 microcontroller. DAC is counter-based, using analog comparator connected to PB0 (+) and PB1 (-). Code included.