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 in sequence.
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. Record the training process in the table.
Circuit diagram:
