Four Person Responder Diy Kit 4 Channel Answering Teaching Practice Welding PCB Board Fun Electronic DIY Parts laboratory

Four Person Responder Diy Kit 4 Channel Answering Teaching Practice Welding PCB Board Fun Electronic DIY Parts

First, the target task
1. Make a four-person answering device according to the schematic.
2. Learn the application of integrated gates and triggers to improve the comprehensive application capabilities.
3. The circuit installation connection diagram will be drawn according to the schematic diagram.
4. Master the basic debugging and measurement methods of the responder circuit.

Second, the implementation steps
Drawing wiring diagrams → inventory components → component detection → insert and soldering → pre-energization inspection → power-on debugging and measurement → data recording

Third, the debug record
After checking that the components are installed correctly, the power can be turned on (the power supply is supplied with +5V from the external regulated power supply) for debugging.
(1) When the zero switch S0 is pressed, all indicators are off.
(2) Select one of the switches S1 to S3 (such as S1) to press, and the corresponding indicator light (VL1) should be illuminated. At this time, pressing other switches is invalid.
(3) Press control switch S0, all indicators should be off.
(4) Repeat steps (2) and (3) to check whether each indicator is lit.
According to the function of the responder, the circuit is debugged. If the circuit meets the requirements, the circuit is not faulty. If some features are not possible, try to find and troubleshoot.

This kit can be used for electronic technology basics and skills teaching training, electronic skills teaching, electronic technology teaching, digital circuit teaching, electronic enthusiasts, beginners training.

The kit contains a full set of components, boards, supporting drawings, component lists and more. (Note: The kit is not a finished product and requires the customer to solder itself!)

First, the kit description
The four-person answering device is mainly composed of a four-way answering switch, a rushing latch circuit, an encoding circuit, and a seven-segment decoding display circuit. The four-person responder has data latching and display function. Under normal circumstances, the four switches are in the normally open state. After the rush is started, the player number that first presses the switch is immediately latched, and the input circuit is blocked, prohibiting other players from answering. . The player number that first pressed the switch is displayed on the seven-segment digital tube. Until the host presses the clear switch, it will enter the next round of answer.