Microcomputer control experiment teaching device based on AVR single chip microcomputer

A microcomputer control experiment teaching device based on an AVR single chip microcomputer belongs to the field of single chip microcomputer experiment teaching, and comprises an AVR single chip microcomputer and a peripheral circuit, wherein the teaching device integrates push buttons, a liquid crystal display and mini-type printer interfaces, the AVR single chip microcomputer can be connected with the push buttons, the liquid crystal display and the mini-type printer through the interface, the teaching device also integrates an analog quantity input and output channel and a switching value input and output channel, thereby analogue signals and digital signals of the peripheral circuit can be mutually conveyed with signals of the channels and the AVR single chip microcomputer to finish control experiments of the peripheral circuit, the teaching device is provided with computer communication interfaces, the teaching device and a PC machine can be connected through the interface, program downloading and on-l