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摘 要 虽然开放系统是一个流行的名词, 但是对于一般用户, 它却是一个在实际工作中“无法操作”的事物。本文从计算机开放系统的基本特征出发, 通过逻辑推理, 导出...
摘 要 虽然开放系统是一个流行的名词, 但是对于一般用户, 它却是一个在实际工作中“无法操作”的事物。本文从计算机开放系统的基本特征出发, 通过逻辑推理, 导出描述开放系统的轮廓, 借助于后者使开放系统一词的内涵得到了澄清, 并使它的实现变成了“可操作的”。文中还从IT 实际工作的方便出发, 提出了一个简明的开放系统的工作定义。关键词 开放系统, 轮廓, 可移植性, 可互操作性, 封闭系统, 开放式专有系统-Abstract Although open systems is a popular term, but for the average user, it is a practical work in a "inoperative" things. This open computer systems from the basic characteristics, through logical reasoning, derived describing the contours of open systems, using open systems which enable the connotation the word has been clarified, and the realization that it has become a "workable." The article also from IT to facilitate the practical work, put forward a simple one, the open system of working definition. Keywords open systems, contour, portability, interoperability, closed system, an open-end proprietary systems
- 2022-02-21 13:01:07下载
- 积分:1
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Introduction based on the 87C52 microcontroller and SA 8381
介绍了基于87C52 微控制器和SA 8381 型PWM 产生芯片实现的SPWM 型单相逆变电源的全数字化控制系
统。详细说明了该逆变电源系统的原理构成和主电路原理。简要说明了M ITEL 公司的新型SA 8381 带微处理器接口的可编
程SPWM 波形发生器的引脚功能、内部框图及工作原理, 说明了他的技术特点、应用范围等, 并给出了逆变电源系统程序
框图及控制回路程序流程, 软件编程情况。-Introduction based on the 87C52 microcontroller and SA 8381-type chip PWM generated the SPWM type single-phase inverter power all-digital control system. A detailed description of the inverter power supply system the principle of the composition and the main circuit. M ITEL briefly describes the SA 8381
- 2023-04-17 02:40:04下载
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Tornado Tools Reference
Tornado Tools Reference
- 2023-02-08 03:50:03下载
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- 2023-07-15 00:35:03下载
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Intel PXA270 reference power consumption characteristics and design! On the use...
Intel PXA270功耗特性及设计参考!对使用270做开发的人员有参考价值-Intel PXA270 reference power consumption characteristics and design! On the use of 270 staff to do the development of reference value
- 2022-09-12 10:45:03下载
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sql server的帮助信息,对初学者或者做为查询文档必不可少的。...
sql server的帮助信息,对初学者或者做为查询文档必不可少的。-sql server help information, for beginners or query the document as necessary.
- 2022-02-02 18:02:03下载
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ARM9系列处理器是英国ARM公司设计的主流嵌入式处理器,主要包括ARM9TDMI和ARM9E...
ARM9系列处理器是英国ARM公司设计的主流嵌入式处理器,主要包括ARM9TDMI和ARM9E-S等系列。本文主要介绍它们与ARM7TDMI的结构以及性能比较。-ARM9 family processors, the United Kingdom are designed mainstream ARM embedded processors, including ARM9TDMI and ARM9E-S series. This paper mainly introduces the structure with the ARM7TDMI and the performance comparison.
- 2022-08-03 09:16:34下载
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计算机数据结构十日谈。将数据结构与离散数学紧密结合进行讲解。相信读完此书,你不仅对数据结构有了更深入得了解,而且对离散也有所涉猎,岂不美哉!...
计算机数据结构十日谈。将数据结构与离散数学紧密结合进行讲解。相信读完此书,你不仅对数据结构有了更深入得了解,而且对离散也有所涉猎,岂不美哉!-Computer data structure on the 10th to talk about. Data structure will be closely integrated and discrete mathematics to explain. I believe reading this book, you not only on the data structure was a deeper understanding, but have also been studied under the discrete, would not Miya!
- 2022-05-30 01:14:57下载
- 积分:1
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我参加过的tidsp2000培训班的培训资料,拿出来分享
我参加过的tidsp2000培训班的培训资料,拿出来分享-this is the document when I take part in the training of TI DSP2000,I will share with you
- 2022-05-07 07:09:02下载
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这是我们做课程设计的时候频率发生器的一些程序模块,希望对大家有用...
这是我们做课程设计的时候频率发生器的一些程序模块,希望对大家有用-This is what we do when designing courses frequency generator module some of the procedures, we hope to useful
- 2022-05-25 10:41:07下载
- 积分:1