Great electronics starter learning tool
It might be 40 years old but works fine and helps you learn basic electronics and logic gates. It explains how circuits function and challenges you to go beyond the circuit shown. I also have the Science Fair 160 in one and the seven segment display didn’t work. The ground wire came detached. Soldered back on and it works fine. All components are replaceable. If someone wants to learn electronics it’s a great electronics lab for that. It’s fun to connect wires to see what happens. I highly recommend it. 
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