Feature 1Reasonable Circuit Design: The PCB of the answerer training kit chooses the best FR4, the circuit design is reasonable, and the component identification is clear at a glance. 2Circuit Includes: Digital answerer experiment kit circuit includes answering, encoding, priority, toggle, digital display and reset circuit. 3Digital Circuit: The electronic kit circuit design adopts the time base circuit and decoding drive widely used in digital circuits. 4Scope of Application: Answerer training kit can be used for electronic skills competitions, electronic skills assessment, electronic training tutorials, etc. 5Plastic 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.Item Type: CD4511ElectronicDIYKitMaterial: PlasticCircuit Includes: Answering, Coding, Priority, Toggle, Digital Display and Reset CircuitPurpose: 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 .wang-edit-text{ font-family:'Arial' important; } .wang-edit-text table { border-top: 1px solid 000; border-left: 1px solid 000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000; border-right: 1px solid 000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x CD4511ElectronicDIYKit (43 Piece )