某学校网络拓扑模拟图，接入层设备采用S2126G交换机，在接入交换机上划分了办公网VLAN20和学生网VLAN30。为了保证网络的稳定性，接入层和汇聚层通过两条链路相连，-Simulation of a school network topology map, access layer switches S2126G equipment used in the access switch on the office network division VLAN20 and students Net

用拓扑排序、邻接矩阵存储 结构建图、for语句的灵活运用，栈及数组来实现最短路径问题-Topological sorting adjacency matrix storage structure building plans, the flexible use of the for statement, stacks and arrays to achieve the shortest path problem

本教程将详细介绍两种基本运算放大器的拓扑结构(电压反馈(VFB)与电流反馈(CFB))，并 说明其差异。图1中再次列出了基本电压反馈运算放大器和增益公式。-This tutorial will introduced two kinds of basic topology structure of the operational amplifier ((VFB) voltage feedback and current feedback (CFB)), and Explain the diff