發送短信

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  _  __     ___     _____     __   __    ____    
 | |/ //   / _ \\  |  __ \\   \ \\/ //  |  _ \\  
 | ' //   / //\ \\ | |  \ ||   \ ` //   | |_| || 
 | . \\  |  ___  ||| |__/ ||    | ||    | .  //  
 |_|\_\\ |_||  |_|||_____//     |_||    |_|\_\\  
 `-` --` `-`   `-`  -----`      `-`'    `-` --`

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發送短信 : On-off-keying communication system based on low power receiver