Features 1、Reasonable Circuit Design: The PCB of the answerer training kit chooses the best FR‑4, the circuit design is reasonable, and the component identification is clear at a glance. 2、Circuit Includes: Digital answerer experiment kit circuit includes answering, encoding, priority, toggle, digital display and reset circuit. 3、Digital Circuit: The electronic kit circuit design adopts the time base circuit and decoding drive widely used in digital circuits. 4、Scope of Application: Answerer training kit can be used for electronic skills competitions, electronic skills assessment, electronic training tutorials, etc. 5、Plastic Material: The DIY learning board kit uses high quality and sturdy plastic materials, wear resistant and durable, and can be used for a long time. Specification Item Type: CD4511 Electronic DIY Kit Material: Plastic Circuit Includes: Answering, Coding, Priority, Toggle, Digital Display and Reset Circuit Purpose: The 8 channel digital display responder is a product specially developed for the spot check of electronic assembly and debugging skills. The circuit design adopts the time base circuit and decoding drive widely used in digital circuits. Application: It can be used for electronic skills competition, electronic skills assessment, electronic training tutorials, etc. PCB chooses the best FR-4, the circuit design is reasonable, and the component identification is clear at a glance Package List 1 x CD4511 Electronic DIY Kit (43 Piece )