本文给出了一种以80C31为主控CPU的固定电话短信息终端的设计，从系统软硬件两个方面说明了固定电话短信息终端的设计方法和各个部分的工作原理 -This paper proposes a 80C31 CPU for controlling the fixed telephone short message terminal design, system software and hardware from the two showed that the fixed telephone sho

80c31和0805及dac8032芯片的控制输入输出程序，很好很强大-80c31 and 0805 and dac8032 chip input and output control program, a very powerful