Integrated Circuits - Making a 4-Bit Calculator (Part 2)
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![PC - [Showcase] A calculator using only logic gates! | Terraria Community Forums](http://i.imgur.com/5bhlubF.png "PC - [Showcase] A calculator using only logic gates! | Terraria Community Forums")
PC - [Showcase] A calculator using only logic gates! | Terraria Community Forums
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![PC - [Showcase] A calculator using only logic gates! | Terraria Community Forums](http://i.imgur.com/AjEpzv9.png "PC - [Showcase] A calculator using only logic gates! | Terraria Community Forums")
PC - [Showcase] A calculator using only logic gates! | Terraria Community Forums
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