高频电子技术的仿真实验包括：LC选频。AM,FM,DSB,SSB的调制。利用EWB仿真-High-frequency simulation of electronic technology, including: LC frequency selection. AM, FM, DSB, SSB modulation. EWB simulation using

电子计数器测频有两种方式：一是直接测频法，即在一定闸门时间内测量被测信号的脉冲个数；二是间接测频法，如周期测频法。直接测频法适用于高频信号的频率测量，间接测频法适用于低频信号的频率测量。本文阐述了用数字电路设计了一个简单的数字频率计的过程。-Electronic counter measuring frequency in two ways: one is the direct frequency measurement method, that is, in a certain gate ti