Requires acousto-optic with prompt function, can speak, and can show the number of vies to answer first, on the other hand, must be within the prescribed time vies to answer first vies to answer first, otherwise the buzzer alarm automatically, as a subject vies to answer first time has passed, time can be set up,

CodePudding user response:

Pure software? Still want to meet external vies to answer first button, display screen, alarm and so on equipment?