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

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發送短信 : Analysis and design of micropower asynchronous adders