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...
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...
This application report discusses the design of non-invasive optical plethysmographyalso called as p...
The PCA9555 is a 24-pin CMOS device that provides 16 bits of General Purpose parallelInput/Output (G...
The PCA9557 is a silicon CMOS circuit which provides parallel input/output expansion for SMBus an...
The MAX3243E device consists of three line drivers, five line receivers, and a dual charge-pump circ...
The Philips family of Multiplexers and Switches consists of bi-directional translating switches cont...
The CAT9534 is an 8-bit parallel input/output portexpander for I²C and SMBus compatible applica...
The μPSD32xx family, from ST, consists of Flash programmable system devices with a 8032 Microcontrol...
The μPSD32xx family, from ST, consists of Flash programmable system devices with a 8032 Microcontrol...
Radio Frequency Identifi cation (RFID) technology usesradiated and refl ected RF power to...