1. A fixed seat of an electronic table card, comprising a base seat and a fixing assembly, wherein the base seat comprises a bottom plate and two side plates, the two side plates cooperate with the bottom plate to form a triangular structure, and each of the side plates is provided with a mounting opening that has a shape corresponding to that of a protrusion of the electronic table card and allows the protrusion to probe into the triangular structure; and the fixing assembly is configured to be clamped with a clamping slot of the protrusion extending into the triangular structure.
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