CharacteristicIt has computer and movable keyboard two operation ways. The teacher recorder, which uses imported electricity-controlled movement, film button and liquid crystalDisplay with a large screen, has the perfect function and novel design.Main functions:Acoustic control: teacher can control the sound of the main recorder at any timeAccording to the teaching requirement.Pause: when the teaching material divided into many paragraphs has been played, every paragraph pause the same time automatically.It can be controlled either by computer or by the movable keyboard.Students can choose two- way programs, when they have classes.Teacher can make dialogue with different teams.Standardization test function.The time of tests can be set at random.Remote control main recorder machine and student machine.Whole dialogue: the voice of the teacher can be transferred to the whole class.Play: teacher can explain a certain program.Program listening: students can free choose any program to listen to.Meeting function: this system can automatically divide the students into severalteams to make conversation.Demonstration function: the voice of the appointed students can be sent to the wholeclass.Seat edition function: within 120 seats, the number of the seats can be developedhorizontally or vertically at random.Assigned program listening: teacher can assign students to listen certain program,while students cant choose.Controlling the three-way input of audio frequency, it can choose one as the output.It can control and send one VGA signal to projecting apparatus and other output equipment. producing area:China payment:T/T in advance supplying capacity:30 sets/month