图9.3DAC0832单缓冲方式接口 DACO832 +5V POl 74LS373 ALE 80C51 outIl XFER WR WR AGND WR, DGNDE图9.3 DAC0832单缓冲方式接口 WR 74LS373 G DAC0832 DI7 0 CS XFER WR1 WR2 Vcc ILE Vref Rfb Iout1 Iout2 AGND DGND - + +5V P2.7 ALE P0 80C51    Vout