基于80C196的微型打印机的接口电路设计

微型打印机在单片机应用系统中应用相当广泛,在智能仪器仪表、医疗仪器、消防报警、计价器等系统中几乎成为标准配置。本文利用80C196单片机丰富的输入输出功能和较高智能化程度的TPμP-T系列微型打印机的接口,在分析TPμP-T微型打印机控打原理的基础上,设计以80C196单片机为控制核心的微型打印机接口电路。本文主要介绍80C196单片机控制微型打印机实现打印功能的设计和实现方法。     

微型针打印机的系统联接与应用

本文介绍了Ｍｏｄｅｌ－１５０微型打印机机芯联接于单片机应用系统的控制方法。利用原系统的中央处理器进行中断打印控制，由此可不必为打印机专门配置控制用ＣＰＵ和相应的接口电路，有利于降低产品成本，提高整机的可靠性。     

基于USB的嵌入式系统微型打印机接口设计

针对与日俱增的嵌入式系统的打印需求,设计了一种以USB总线通用接口芯片CH375A为USB主机控制芯片、以低功耗16位单片机MSP430F449为主机控制器的USB微型打印机接口模块,介绍了基于USB的微型打印机接口工作原理,论述了MSP430F449单片机通过CH375A控制USB微型打印机的硬件电路及其电磁兼容设计,给出了USB微型打印机枚举、数据同步、数据批量传输等软件设计方法;实际应用表明,USB微型打印机使用方便,接口模块抗干扰能力强、可靠性高.     

USB主控制器在智能仪器打印接口上的实现

介绍了一种基于嵌入式系统的USB接口的设计,该接口将实现与带USB接口的通用打印机相连,将以往应用于智能仪器上的微型打印机改成通用USB接口打印机以降低设备成本,同时也令使用更加便捷。该系统主要采用MCS51系列单片机及Cypress公司的USB主控芯片SL811HS来控制驱动HPDeskJet系列的USB接口喷墨打印机,将智能仪器采集处理后的数据按规定格式打印。本文给出了软硬件设计方法及用C51语言编写的一系列基本控制程序。     

基于GSM短信息的无线微型打印机设计

对微型打印机的控制方式主要有短距离的有线通信,以太网通信和无线蓝牙通信等,还没有出现基于短信息的远距离无线通信方法.鉴于此,设计一款基于GSM短信息的无线微型打印机.所打印的信息通过手机以短信息的方式发送给打印机,真正实现不受地点限制的无线打印.打印机以华为的GSM模决GTM900C和高性能MCS-51单片机为控制核心,以思普瑞特的微型打印机为控制对象.文章介绍了GTM900C与单片机,单片机与微型打印机之间的硬件接口电路设计,给出短信息的编码和解码内容,以及如何在单片机中集成国标码.     

爱普生TM-U220打印机初窥

最近，全球微型打印机领导厂商——爱普生公司，面向中国市场推出了新款TM—U220系列微型票据打印机。这款应用了9针、串行点阵技术的微型打印机，以其全新符合工业打印标准的面貌和革命性的打印上纸方式，可以适用于广泛的微型打印应用领域，包括商业POS终端系统、餐饮。POS系统等。在可靠性和易用性方面，TM—U220将微型打印机的技术和应用又扩展了一步。     

微型打印机打印程序设计

以Tpup-AF系列高速面板式微型打印机为例,设计了与AT89S52单片机的硬件接口以及相关控打软件。介绍了AT89S52单片机串行口应用设置、接口转换电路及微型打印机的串行通信方法,此方法也适合于其他类型的微型打印机及串行通信场合。运行结果表明,系统工作稳定可靠,具有硬件电路简单、成本低廉、编程方便、通信可靠性高的特点,能广泛地应用于工业打印场合。     

基于微型字符打印机芯的汉字点阵打印方法

本文在分析微型打印机芯M-780结构的基础上,介绍了如何利用九针字符微型打印机芯进行汉字点阵打印的实现方法,提出了基于8住单片机为核心的微型打印机设计方案。本文在字符打印机芯的步进驱动、GB2312—80汉字点阵字库的编排、机芯打印线圈的保护等方面较现有针式微型打印机方案均有创新和改进。产品已获得了国家实用新型专利,并在商场POS系统中得到良好应用。     

电化学肿瘤治疗仪与微型打印机的接口

本文介绍了采用８０３１单片机的电化学有瘤治疗仪与微型打印机ＧＰ１６及ＳＥＧ－ＭＰ１６Ｐ的通用接口的电路与软件设计，该设计可把仪器在运行过程中所输出的有数打印出来，给了治疗报告单，为医生及患者提供方便。     

51单片机应用系统接口电路的设计

介绍一种用于５１系列单片机应用系统的接口电路，亦可用于其它单片机应用系统。该电路采用８２５５作为接口芯片，可外接简易键盘、ＬＥＤ显示器以及微型打印机，构成较简单的单片机应用系统。经实验表明：该接口电路简单、可靠、使用方便，对智能仪器、仪表或过程参数检测与控制装置的设计具有一定的参考价值。     

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.