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1 引言在计算机控制系统中 ,通常设有模拟量输入通道 ,必须将模拟量转化为数字量才能送入计算机 ,进行进一步的处理。这里 A/ D转换芯片起着极其重要的作用。随着计算机使用范围的扩大 ,串行 A/ D转换芯片获得了广泛的应用。再之 ,由于美国 ATMEL公司生产的 AT89C2 0 5 1单片
1 Introduction In the computer control system, usually with analog input channels, you must convert the analog to digital to be sent to the computer for further processing. Here A / D converter chip plays an extremely important role. With the expansion of the use of computer, serial A / D converter chip has been widely used. Furthermore, due to the AT89C2 0 5 1 chip produced by the American ATMEL company