摘要
介绍了基于AT89C2051单片机的扩音呼叫电话机的硬件与软件设计。该电话机能根据预定振铃数目后自动对主叫话音进行扩音,这一特点在石油、化工、煤炭等强噪音的生产场所能使主叫用户快速、简便的与被叫取得联系。
A kind of hardware and software design of The Amplifying Tone Telephone based on AT89C2051 is introduced in the paper. It can amplify the call tone after the ringing which number can be pre-set in the circuit. This character is very convenient for the call to communicate with the called in the strong-noised working place such as oil, chemistry and mine enterprises etc.
出处
《微计算机信息》
北大核心
2008年第35期39-40,209,共3页
Control & Automation
基金
企业信息化网络建设方案和传输平台颁发部门:天津市人民政府信息化办公室(071034012)
