基于AT89C52单片机的智能呼救系统设计
从系统硬件设计和软件构成上，介绍一种以AT89C52单片机为核心,通过无线遥控方法实现对预设电话自动拨号报警的智能呼救系统。系统提供了患者在紧急情况下无法使用电话报警时的一种报警手段。由用户预设的多组电话号码作为语音报警对象,预录可长达20 s的语音信号来说明患者所处地点及病情，并通知患者家人。 ...
consists技术资料
📦 资源总数：92
💻 源代码：1622
"探索由92个精选资源组成的'consists'技术库，深入了解电子系统集成与模块化设计的核心。本标签涵盖从基础电路到复杂系统的构建原理，是电子工程师掌握如何将不同组件高效整合为功能完备设备的关键。无论您专注于嵌入式系统开发、自动化控制还是物联网应用，这里都有助于提升您的项目实现能力。立即访问，开启您的创新之旅！"
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查看全部92个资源 »A Single-Chip Pulsoximeter Des
This application report discusses the design of non-invasive optical plethysmographyalso called as pulsoximeter using the MSP430FG437 Microcontroller ...
PCA9555 16bit I2C-bus and SMBu
The PCA9555 is a 24-pin CMOS device that provides 16 bits of General Purpose parallelInput/Output (GPIO) expansion for I2C-bus/SMBus applications and ...
8-bit I2C-bus and SMBus IO port with reset
The PCA9557 is a silicon CMOS circuit which provides parallel input/output expansion for SMBus and I2C-bus applications. The PCA9557 consists of an...
3-V TO 5.5-V MULTICHANNEL RS-2
The MAX3243E device consists of three line drivers, five line receivers, and a dual charge-pump circuit with±15-kV ESD (HBM and IEC61000-4-2, Air-Gap ...
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