本文通過分析GSM 模塊與單片機的接口設計簡單介紹了TC35i 模塊的常用指令及編碼規則，著重介紹了TC35i 模塊與AT89C51 的工作原理、外圍接口電路、軟件控制技術，同時給出了一些TC35i 模塊與AT89C51接口的應用程序，提出了AT89C51 在接收數據時應該注意的問題，從而設計出具有GSM 模塊的數據傳輸終端。
[關鍵詞]：SIM 卡 GSM AT 指令 TC35i AT89C51
Based on GSM module and AT89C51 connection design and application CHENG QUAN Xiang_dong Li （ZHOUKOU NORMAL UNIVERSITY PHYSICS，HENAN，CHINA 466000） [Abstract]: This article through analyzed the GSM module and the monolithic integrated circuit connection design simply introduced the TC35i module commonly used instruction and the coding rule, introduced emphatically the TC35i module and the AT89C51 principle of work, the periphery connection electric circuit, the software control technology, at the same time has produced some TC35i module and the AT89C51 connection application procedure, proposed AT89C51 when receive data should pay attention question, thus designed has the GSM module the data transmission terminal.
[Key word]: SIM Card GSM AT Instruction TC35i AT89C51