CD4511 DIY Eight-Way Digital Display Answering Machine Kit Training Electronic Production Skills Competition

CD4511 DIY Eight-Way Digital Display Answering Machine Kit Training Electronic Production Skills Competition

8-way answering machine kit CD4511 pcb welding kit for electronic production skills competition The answering machine can display the number of the priority answering person based on the answering situation, and the buzzer sounds to indicate successful answering. The answering machine consists of answering, coding, priority, latch, digital display, and reset circuits. The circuit of this preemptive answering device can simultaneously perform 8-way preemptive answering. After pressing the key, the buzzer sounds, and the number of the priority responder is displayed on the nixie tube. After the answer is successful, press the key again, and the display will not change unless you press the reset key. After resetting, the display is cleared, and you can continue to answer the question
Classic training kit, a complete set of parts, with installation instructions and circuit diagrams. As long as the welding is correct, connect 5V power supply to work.

Welding steps
Welding resistor
Welding 1N4148
Welding touch switch
Welding triode
Welding 10UF electrolytic capacitor
Welding the IC base
Welding buzzer
Welding digital tube
Welding power supply terminal