Double-sided sounding wall chart, implementation method, and double-sided button implementation circuit and method

Abstract

The invention discloses a double-faced sound production wall map, an implementation method thereof and a double-faced button implementation circuit and method. The double-faced button implementation circuit comprises a first printed circuit, a second printed circuit and an insulation layer. The first printed circuit is provided with N first contacts, a first switch contact and a second switch negative electrode contact; the second printed circuit is provided with N second contacts, a second switch contact and a first switch negative electrode contact. The first contacts are arranged on X first guide lines, and the second contacts are arranged on Y second guide lines. The insulation layer is clamped between the first printed circuit and the second printed circuit. Through holes are formed in the positions opposite to all the contacts. The first switch contact and the second switch contact are pressed to generate a first selection signal and a second selection signal respectively. The first contact and the second contact are pressed to generate a first using signal and a second using signal respectively. A control unit recognizes the states of the corresponding first contacts and the states of the corresponding second contacts through the first selection signal, the second selection signal, the first using signal and the second using signal. The double-faced sound production function of the wall map is achieved, the voiced teaching contents are enriched, and the space utilization rate of products is improved.

Description

technical field [0001] The invention relates to teaching aids, in particular to a double-sided sounding wall chart, a realization method, and a double-sided button realization circuit and method. Background technique [0002] Now families are paying more and more attention to children's early education. In order to meet parents' requirements for children's early education, various teaching wall charts have appeared on the market, among which teaching wall charts with touch pronunciation function are most popular among parents. [0003] Most of the sound wall charts on the market now use the front picture layer, the middle film circuit layer and the back waterproof layer as single-sided sound wall charts bonded with self-adhesive. This kind of sound wall chart not only lacks luster and realism on the front picture layer, It is easy to deglue with the layer, the service life is short, and the back is blank, or there are teaching content on both sides, but only one side has sou...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the audio wall chart can only sound on one side, the audio teaching content is less and the use efficiency is low

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