In the hardware designing , the system uses the lower electronic - consuming pic16f877 single - chip computer , combined with micro - work consuming design of other parts . we also used a real time clock , which is combined with the flow of liquid , so we can make inquiry the flow data conveniently 在系统硬件设计中,采用了耗电少的pic16f877单片机,各部分采用微功耗设计,并引入日历时钟,将日历时钟和流体的流量结合在一起,便于流量数据的查询。
The hardware of the fingerprint menjin system used for the safe includes a stand - alone built - in cpu fingerprint recognition device , microcontroller , liquid crystal display , keyboard , power management for a stand - alone module , e2prom , a real - time clock / calendar , voltage test and an electric lock 用于保险箱的指纹门禁系统硬件主要由指纹识别模块、微控器、液晶显示器、键盘、指纹识别模块的电源管理、存储器、日历/时钟芯片、电压检测、电控锁等部分组成。
2 . the microcomputer - based greenhouse monitoring & controlling system has been developed around an atmel microcontroller which is reinforce by multiplex a / d sampling module ; large volume data on - line storage module ; real - time clock module ; keyboard & display man - machine interaction module ; system monitoring module and communication interface module and so on 温室微机测控系统的设计以美国atmel公司的微控制器为核心,扩展了多路a d采集子模块、大容量数据在线存储子模块、实时时钟子模块、键盘显示人机对话子模块、系统监视子模块、现场总线系统和上下位计算机通讯子模块等等。
Then , two fault - tolerant - orient real - time operating system ( rtos ) , which are tested as flight critical software applications and reliable , are presented . in addition , the synchronization between the two computers in fadec system , which includes synchronization of real time clock ( rtc ) and synchronization of task layer , is designed 基于这种全新系统结构,完成了fadec系统软件非相似技术容错结构系统设计;完成了高可靠性非相似嵌入式实时操作系统( rtos )的选型;完成了fadec系统双机同步(包括时钟级同步和任务级同步)设计。