采用verilog编写的高速串型DA芯片dac121驱动代码，占用le较少，效率高，目前我应用在较多产品上-Verilog prepared using high-speed string-type DA-chip dac121 driver code, occupation le small, high efficiency, the current I applied to more products

DAC121S10是精度为12位的DA转换，精度高，体积小，便宜-DAC121S10 is precision 12-bit DA converter and high precision, small size, low

针对C8051F340对DAC121S101的驱动程序，本人亲测可用。(One DAC121S101 driver for C8051F340, I have tested available.)