The schematic PDF file has been uploaded. As shown in the figure below, there is a "push-pull amplifier" circuit behind the microphone circuit. Compared with the push-pull circuit in the textbook, thi...
In late July 2005, I received a project for a mine. At that time, I only knew about 51 MCU, and this project was a "half-finished project". The previous project used AT89C53 MCU. I don't know why this...
Author: Jiang Jie, a member of Yibo Technology Expressway MediaSince the German physicist named Braun invented the first cathode ray tube oscilloscope in 1897, there are only two kinds of electronic e...