Note: This article is just a personal taste after the collection, please don't reprint it !! Thank you. Introduction, young people who have not sent a text message must be a protected rare animal, and the development of communication has become an important part of people. Means, which also contain huge markets and economic benefits, and the talents who have mastered SMS technology are also sought after by major companies. This article describes the principles and implementation methods of SMS. It has focused on the code of the SMS, the AT command, and the method of implementing serial communication with C #. Preface, there are three ways to send text messages: 1. Gateway mode: 2. Terminal mode: It is to send a text message through a data cable to send a text message by means of settings such as GSM Modem (mobile phones that support AT instructions). To achieve this method, you must understand serial communication, AT command, SMS coding, decoding, which is also the focus of this article. 3, use some websites to achieve, simple mode, but the website is too high, the requirements for the network are also relatively high, very unsuitable for project development
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