Shannon's1938 master's thesis, A Symbolic Analysis of Relay and Switching Circuits, used Boolean algebra to establish the theoretical basis of modern digital circuits. 香农写于1938年的硕士论文,“继电器与开关电路的符号分析”,应用布尔代数建立现代数字电路的理论基础。
In this paper a method is proposed for minimization of the SP switching network by using the Boolean algebra 'and odd ring sum. 运用布尔代数与奇环和的概念,提出了一种SP网络最小化的方法。