P89C51RX+/RX2单片机及其ISP/IAP技术

P89C51RX+/RX2是Philips公司推出的带有32KB、64KB FLASH/EPROM的单片机.芯片上免费提供BOOT ROM固件,可实现在系统中编程(ISP)和在应用中编程(IAP).本文详细介绍了它们的ISP和IAP技术,并给出了ISP记录格式和IAP函数调用功能一览表.     

P89LPC932的几种ISP编程方法

P89LPC932是Philips公司推出的一种新型、高速、低功耗的兼容MCS 51指令集的8位单片机,芯片内部集成有8 KB的Flash程序存储器,可以进行ISP(In System Programming)/IAP(In Application Pro gramming)编程,特别适合于小型系统设计、制造或样品研发。本文比较详细地描述用P89LPC932 进行ISP编程的几种方法。     

P89C51RX＋／RX2单片机及其ISP／IAP技术

P89C51RX＋／RX2是Philips公司推出的带有32KB、64KB FLASH／EPROM的单片机。芯片上免疫提供BOOT ROM固件，可实现在系统中编程（ISP）和在应用中编程（IAP）。本详细介绍了它们的ISP和IAP技术，并给出了ISP记录格式和IAP函数调用功能一览表。     

ISP技术在Netlab单片机实验系统中的应用

常规编写的汇编程序在Netlab无人职守的实验环境下无法胜任程序的下载，根据Netlab单片机实验系统的建设需要，将AT89S52单片机ISP功能的实现方法应用于Netlab单片机实验系统，在控制端采用ISP技术就可使过程大为简化。给出了基于Internet的51单片机实验系统的原理框架、ISP下载点的硬件电路图、ISP编程软件的实现方法以及对应的VC＋＋主程序段代码。为远程监控、实验系统开发以及远程智能仪表升级等提供了一种设计思路。     

ISP技术在煤矿安全监控分站中的应用

为克服煤矿安全监控系统存在着升级维护不方便的缺点,使用ISP(在线可编程)技术,设计了分站单片机软件和中心站PC机软件.该方案可以实现远程在线更新程序.     

51单片机新手入门实例详解

本刊2005年第11期上介绍了一款集成有实验、编程、仿真、ISP下载多种功能的51/AVR单片机学习开发系统ME300B,引起很多读者的关注。本文以一个LED流水灯程序为例子,教您一步一步的学习如何利用Keil C51软件编写源程序,编译成Hex文件、在Keil集成仿真调试环境中利用ME300开发板的仿真功能进行硬件仿真调试的整个过程。最后介绍如何在ME300开发板上将编译成功的HEX文件烧写到单片机进行演示。对于从未接触过单片机的初学者,只需具备一套ME300B单片机学习开发系统和一台电脑,再按本文介绍的步骤操作,可很快的编写出自己的第一个单片机程序,并通过ME300B开发系统看到程序的实际运行结果。如果你没有ME300B开发系统,也可以通过此文了解单片机开发的整个过程,你将发现单片机并没有想像中那么高深莫测!     

基于BANK SWITCH技术实现MCS51存储空间的扩展

对BANK SWITCH技术进行了详细的分析,提出了两种基于MCS51内核的单片机实现大程序编写的方法,以及对实现BANK SWITCH技术所需要的硬件支持和软件配置进行了详细介绍。介绍了如何将程序代码放到确定的位置并对存储空间分BANK,解决了基于MCS51内核的单片机程序最大存储空间受限于64KB的问题。     

51系列单片机外RAM空间超64KB的扩展方法

<正> 51系列单片机的外RAM 空间为64KB,某些场合下,64KB 的空间是不够的,但只要在硬件线路加上一个只包含触发器和几个门电路的转换器,并在软件上加上仅有几条指令的一段简单程序即可扩展空间使之超过64KB。64KB 的空间是由16根地址线决定的,它由P(?)提供(?)8位,P_(?)提供高8位。要想扩大空间,只有增     

ISP技术在全自动生化分析仪中的应用研究与实现

本文以Wibond公司的8位微控制器W78E516B为例介绍了在系统编程(ISP-InSystemProgramming)技术的原理,并详细说明了ISP技术在全自动生化分析仪中的应用及实现方法,从而降低了产品成本,简化了系统更新的过程。     

ME300系列单片机学习开发系统简介

ME300系列单片机学习开发系统首创将单片机实验板、编程器、仿真器、ISP下载线集成到统一系统中,开发系统上自带一个专用的CPU直接对实验中的芯片进行在线编程控制,配合专门开发的串行下载编程控制软件,可轻松地将编译好的代码下载到实验CPU中进行验证或演示,试验过程中无需拔插任何电缆和芯片,也无需切换电源,整个过程只需利用鼠标操作即可,方便快捷。实验芯片放在40Pin活动锁紧座中,用户可以很方便的更换不同型号的芯片写入程序后用于其他系统,即把ME300B当作编程器使用。同时也可以使用预留的ISP接口连接ISP下载头,对其他目标系统进行在系统编程(ISP-In System Programming),对于产品的软件调试或升级,提供快捷的方案。这样一来,ME300B又可以作为单独的ISP下载线使用了。使用配套的仿真模块与Keil C51调试软件μVision2配合可以直接对实验板上的资源进行在线仿真,也可以通过40Pin外扩接口连接仿真头对外部资源进行在线仿真,可以按单步、断点、连续等方式调试实际应用程序,这样又可将ME300B当作一台独立的仿真器使用。仿真程序窨63k,完全满足开发一般51单片机产品的要求。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

How do children do mathematics with LOGO?

Abstract  This paper considers some results of a study designed to investigate the kinds of mathematical activity undertaken by children (aged between 8 and 11) as they learned to program in LOGO. A model of learning modes is proposed, which attempts to describe the ways in which children used and acquired understanding of the programming/mathematical concepts involved. The remainder of the paper is concerned with discussing the validity and limitations of the model, and its implications for further research and curriculum development.