基于AT89C52的智能电话计费系统设计

Zhang Jianbo, Yin Qun
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引用次数: 0

摘要

在设计中,单片机AT89C52是系统的核心。该系统可以收发DTMF信号,可以识别城市电话号码或长途电话号码。根据号码,可以计费,显示通话时长和通话费用。可实现全价与折扣价的自动转换。它可以准确地计费,方便地查询票务信息。它是可配置的产品,并按下一个按钮重置速率。成本低,功耗低。
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Design of intelligent telephone billing system based on AT89C52
In the design, the MCU AT89C52 is the core of the system. The system can send and receive the DTMF signal, which can identify the city telephone number or the long-distance telephone number. According the number, it can billing and show call duration and call cost. It can realize automatically the conversion between the full price and the discount price. It can billing accurately and conveniently query ticket information. It is configurable product and resets rate by pressing a button. It is low cost and low power consumption.
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