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1.
BIOS是计算机的基础,直接影响着计算机的运行.通过对BIOS的升级不仅能够改善计算机的性能,也有助于解决兼容性问题.本文对BIOS的基本功能、升级BIOS的主要原因、升级主板BIOS以及升级失败后的处理办法进行了较为全面的论述.  相似文献   

2.
BIOS是计算机硬件与软件程序之间的一个“转换器”.当需要增加对新设备的支持和解决硬件间的兼容问题,以及为BIOS增加新的功能模块时,通过升级与更新修改BIOS是最方便、最直接的方法.本文就目前BIOS升级与更新方法提出具体的实现方案.  相似文献   

3.
文章设计了一款基于X86单芯片计算机的BIOS软件,通过分析SD卡的底层寻址方法,并参考SD卡的SPI协议设计BIOS软件;通过设置中断、调用中断,完成BIOS对SD卡的初始化操作和读写操作;将编译后的BIOS的机器码烧写进FPGA开发板片上存储器,调用开发板资源实现计算机的硬件电路部分;执行BIOS机器码指令读取SD...  相似文献   

4.
BIOS,基本输入输出系统,控制着计算机最低层的硬件。我们可以通过修改BIOS参数达到优化系统、修改系统启动顺序及系统日期的目的。由于BIOS程序里面存在很多专业性术语的参数,新手或者不专业的人士在没有学习的情况下,随便设置将可能会屏蔽低层的硬件、破坏系统的性能。在计算机BIOS设置实验教学中为了给学生提供一个真实的实验环境又防止破坏系统的性能,我们开发研制了BIOS设置模拟软件。让学生在动手实践的过程中即加深了对理论知识的理解同时又提高了学生的实践动手能力。  相似文献   

5.
在对基本输入输出系统(BIOS)代码分析的基础上,给出了系统BIOS与Logo模块的关系,讨论了Logo模块中图像文件格式的选取、解压缩、显示及其与系统BIOS的集成等关键技术.结合实际嵌入式系统平台,考虑到易于实现和显示速度,提出了改进的PCX图像显示方法,并给出了Logo模块的具体实现过程.  相似文献   

6.
讨论了传统BIOS程序设计用语言的特色和缺点,提出了用C语言编写BIOS程序的新思路.通过分析Borland C++微模式下编译产生的可执行代码,并创建了适合BIOS程序设计的启动代码,实现了用C语言编写BIOS程序.最后,给出了具体编程示例.  相似文献   

7.
在使用电脑的过程中,难免要与各类密码打交道,要说密码,BIOS密码最值得计算机用户探究。许多人都在电脑的BIOS里设置了密码,用来保护计算机中的资源,本文针对BIOS密码的设置和破解进行比较详细的分析。  相似文献   

8.
BIOS及其升级     
BIOS为计算机提供最低级的、最直接的硬件控制。通过深入认识和了解BIOS,可以对旧的BISO进行升级,使计算机处于最佳的工作状态,提高计算机的性能。  相似文献   

9.
屏幕菜单是计算机和用户进行通讯的重要界面,任何应用软件都少不了它,在非计算机专业人员使用计算机的情况下,它显示更为重要。为此,有必要对菜单的生成进行研究,使其生成自动化、标准化、规范化。本文就此进行一些探讨。  相似文献   

10.
通过设计与生成一种新菜单来实现对菜单的“动态”维护和菜单控制权限的“动态”设置,使菜单的定义、维护和生成能够脱离Foxpro开发平台的支持,菜单内容独立于菜单驱动程序,提高了菜单的移植性和可维护性。  相似文献   

11.
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.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
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.  相似文献   

13.
王慧 《科技信息》2008,(10):240-240
Wuthering Heights, Emily Bronte's only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.  相似文献   

14.
The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.  相似文献   

15.
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。  相似文献   

16.
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.  相似文献   

17.
Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.  相似文献   

18.
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-  相似文献   

19.
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-  相似文献   

20.
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  相似文献   

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