基于RS-485总线的PC与多单片机间的串行通信

为了实现钻井油田中滚动轴承的振动信号测控系统从下位机到PC机的通信,本文设计了一种基于RS-485总线的方法。本文主要论述了RS-485总线在PC机和多单片机系统串行通信中的应用,设计了RS-485总线和单片机的接口,给出了通信协议,提出了上下位机的通信软件。     

PC机与C51单片机的串行通信研究

随着PC机技术和单片机技术的日益成熟,单片机与PC机通信技术的应用也越来越广泛,对通信技术的研究也越来越多,特别是串行通信。该文以RS-232为接口线路,89C51单片机学习板为硬件环境,Visual Basic作为软件开发工具,利用其提供的各种面向对象的开发工具及串行通信控件MSComm,设计了一个PC机与C51单片机串行通信系统。系统主要可以完成PC机和单片机之间手动的数据发送,自动的数据发送,数据传输过程中的奇偶校验,单片机的按键触发,数码管显示等功能。     

基于MATLAB的PC机与单片机串行通信实现

介绍了基于MATLAB的PC机与PIC系列单片机串行通信的实现方法。串行系统主要由PC机、RS-232C电平转换器MAX232ACPE、单片机PICl6F874以及通信程序构成，单片机通信程序用其汇编语言设计，PC机通信程序则是用MATLAB的仪器控制工具箱的函数及通过建立事件和回调函数来实现。给出了具体的通信程序。     

基于RS-232C总线的PC机与TMS320C203串行通信电路

介绍了一个数字信号处理器与PC机基于RS-232C总线的串行通信电路,所设计的硬件电路解决了DSP与PC机电平转换的问题,并利用TMS320C203的I/O线作为RS-232C接口的握手信号,使TMS320C203与PC机可以通过标准的RS-232C串行总线进行通信。该电路结构简单,可靠性好,通信速度快,在实际使用中效果良好;它也适用于其它同类似的DSP与PC机串行通信系统。     

MATLAB在PC机与单片机串行通信的应用

结合单片机与MATLAB两者的优点,提出了一种MATLAB环境下PC机与单片机实时串行通信及数据处理的方法。串行系统主要由PC机、RS-232C电平转换器MAX232ACPE、单片机以及通信程序构成,单片机程序用其C语言设计,PC机通信程序用MATLAB中的专门函数和Instrument Control Toolbox(仪器控制工具箱)实现。     

基于VB实现PC机与单片机的串行通讯

本文介绍使用VB6．0开发工具实现PC机与单片机的串行通讯的基本原理和方法。并结合具体实例给出使用RS-232接口进行串行通信的基本程序。     

基于Matlab的一种小型温度检测系统

基于Matlab环境下PC机与单片机实时串行通信及数据处理的方法.设计了一个小型温度检测系统.由单片机和DS18820完成数据采集,PC机实现通信数据的分析处理及图形显示,并得到温度随时间变化的函数解析式.使用Matlab编程,提高了开发效率.具有一定的实用性.     

计算机与多单片机系统间串行通信的实现

提出了一种计算机和多单片机系统传输速率高、可靠性强的串行通信的新方法。基于32位Windows环境，采用多线程技术实现串行通信的实时性，有效地解决了传统串行通信中的迟滞性和不可靠性，提出多线程技术下上位机和196系列多单片机系统通过RS-485总线实时远程通信的新手段，给出完整规范的通信协议及相应的软硬件实现。     

通用串口适配器的设计与实现

介绍了基于单片机C8051F020的通用串口适配器的设计与实现方法。通过用C51语言对单片机进行编程,控制与RS-232(232电平)、RS-232(TTL电平)、422接口的数据通信;用C++ Builder作为开发平台,通过RS-232接口实现上位机对适配器各通信端口的控制。     

利用串行通信实现实时状态监控

工业控制中PC机与单片机之间实现实时串行通信的一种有效方法。具体介绍了利用VB6.0实现PC机对单片机系统的实时状态监控。     

Assessing Ideational and Evaluative Skills and Creative Styles and Attitudes

This article describes the rationale for the multiphase creative problem solving process, and reports the findings from an empirical investigation conducted to facilitate the problem solving of managers. The ideational skills of the managers were assessed before and after training in a complete process of creative problem solving, along with their ideational attitudes, creative problem solving style (i.e., generator, conceptualizer, optimizer, or implementor), and evaluative skill (i.e., ability to recognize original ideas). The most important findings indicated that the training had a significant impact on the evaluative accuracy of the managers. They were significantly more accurate in their judgments about original ideas after training, both in their identification of original ideas and their recognition of unoriginal ideas. After training, the managers also gave more solutions and more original solutions to problems. Finally, several variables (e.g., the “preference for active divergence” attitude, and the conceptualizer process style) seemed to moderate the impact of training. Training was therefore effective, with specific effects that can be predicted from pre-training individual differences in attitudes and process style.     

Rank and select revisited and extended

The deep connection between the Burrows–Wheeler transform (BWT) and the so-called rank and select data structures for symbol sequences is the basis of most successful approaches to compressed text indexing. Rank of a symbol at a given position equals the number of times the symbol appears in the corresponding prefix of the sequence. Select is the inverse, retrieving the positions of the symbol occurrences. It has been shown that improvements to rank/select algorithms, in combination with the BWT, turn into improved compressed text indexes.     

高等院校行政分析与决策系统的设计与实现

为提高高等院校的管理水平和决策水平,充分利用校园网资 源,开发了高等院校行政财政分析与决策系统。解决了诸如数据的动态查询、自动生成报表 、网络环境下数据共享等技术问题,具有网上数据共享、图形界面友好和安全的保密措施等 特点。     

Stochastic balancing and approximation-stability and minimality

A new method of stochastic model reduction has recently been introduced by Desai et al. [1], [2]. The stability of the reduced order model has not previously, been considered. In this paper, we show that the stability of the reduced order model follows directly from the results of Pernebo and Silverman [3]. It is also shown that the reduced order model is minimal, in the controllability/observability sense. The relevance of this notion of minimality to stochastic minimality is made clear.