微型打印机通用打印程序的设计

以TPμP—16微型打印机为背景，设计了与51系列单片机的硬件接口及微型打印机字符库的扩展，重点介绍了用keil c51设计微型打印机通用打印程序的方法，此方法也适合于其他微型打印机．     

TP 801单板计算机与μ—80打印机联机的软件接口

为了把μ—80打印机连接到TP—801单板计算机去,通常必须配置一些硬件接口电路。然而,根据μ—80的工作时序和TP—801单板计算机的结构特点,我们采用了软件接口,这种接口不用任何附加的硬件把μ—80连接到TP—801去。本文描述了这个软件接口的原理,并且提供了联接μ—80到TP—801去的接线图和指出打印所有ASCII字符方法的程序框图。     

在DOS状态下Word文档的原样打印

本文通过对DOS命令中的COPY和TYPE及重定向功能的分析,运用COPY命令与参数配合,在DOS状态下,实现原样打印MicrosoftWord文档,从而解决了把编辑好的Word文档,移植到其他联有打印机的机器上不能正常打印输出或保持原样输出的问题。     

常用微型打印机与单片机的接口和编程

介绍了TP—μP微型打印机、PP—40描绘器与单片机8031的接口电路和程序编写方法,同时介绍了单片机8031在PP—40上写汉字的一种新方法。     

Star SP320S票据打印机驱动程序设计

Star SP320S票据打印机是广泛应用于高速公路收费系统、ECR、电子、CAT、计算机外设,以及餐饮业厨房打印机等领域。Star SP320S票据打印机具有丰富的打印功能,包括扩展字符集、反转字符打印、下划线等,可通过软件编程的方法进行设定,是一款高效稳定的9针高速双向票据打印机。     

PP40打印机和8031单片微机的连结及编程

PP40是一种应用最广泛的CENTRONICS系列接口的打印机.它有8根数据线,1根地线,3根应答线.应答线中,一根为(?)线,此线出现了负脉冲即启动打印机接收数据并开始打印.这是计算机通知打印机接收数据并打印的信号.一根为BUSY线,它为高电平,表示打印机处于忙状态,这是打印机给出的拒绝计算机送数的信号.另一根为(?)线,线上出现的负脉冲,是打印机通知计算机已完成前一字符的打印,可以接收下一个字符数据的信号.     

谈谈针式打印机

针式打印机是将计算机送来的文字和图形信号转换成打印头的控制信号,并由这一控制信号驱动打印头内打印针的伸缩,通过打印针不断地击打色带,即可在打印纸上打出相应的文字和图形。随着打印机技术的发展,现在的针式打印机一般都自带汉字库。计算机只需将要打印的汉字国际码(两个字节)直接送至打印机,就可以进行汉字信息处理。针式打印机有两种打印方式。1、字符方式:主机在发送打印数据时,只传送字符的 ASCⅡ码,而字符的形态是从装于打印机内部的只读存贮器中发生的。字符方式可以获得较快的打印速度,是当前英文文本文件打印中最常用的方法。2图形方式:主机所传送的是经过软件编辑的图形象素的     

二元树的权分支打印法

本文提出了二元树的一种权分支打印法,可以利用标准打印机或其它通用字符显示装置得到输出匀称和整齐的二元树。这种方法具有占用内存少和算法简单的特点,并能处理幅宽超过打印纸页面宽度的树形,因而较为圆满地解决了二元树数据结构直观图形输出的问题。本文同时给出权分支打印法的FORTRAN语言实用过程段和BASIC语言程序。     

微处理机在计数管坪曲线测定上的应用

本文介绍用Z—80微处理机测定盖革—弥勒计数管的坪曲线的实验原理和测定的软硬件,以及应用电路与程序设计。并用TP—801P打印机打印出坪曲线的图形和坪长值。该项实验的改进,有助于在短时间内得到盖革计数管使用的基本数据,为选用提供方便。     

微型打印机应用系统字符点阵格式转换技术

为解决微型打印机所要求输送的字符格式与PC机字库中字符格式不同的问题,利用PC机的ASC码和汉字字库,用C语言编程实现字符点阵格式转换,则可直接送微型打印机应用系统打印出各种字符．此方法简单,具有实用价值,已成功应用于一些单片机开发系统。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

正~~