论文部分内容阅读
在某些测量与控制电路中,需要用到几路同频率而有固定相差的信号,并要求信号的频率能在一定的范围内变动,以适应测量及控制的需要。要达到上述要求,用一般的电子线路是很不容易的,有时甚至是不可能的。而采用单片机却可以轻而易举地获得上述结果,这类单片机不光硬件很简单,而且软件也很简单,与一般的电子线路相比较,具有结构简单、体积小、成本低等一系列优点。
In some measurement and control circuits, the need to use several channels with the same frequency and a fixed phase difference of the signal, and requires the signal frequency can be varied within a certain range to meet the measurement and control needs. To achieve the above requirements, the general use of electronic circuits is not easy, and sometimes impossible. The use of SCM can be easily obtained the above results, not only the hardware of this type of microcontroller is very simple, but the software is also very simple, compared with the general electronic circuit, with a simple structure, small size, low cost and a series of advantages.