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Embedded system is(66)special computer system which is scalable on both software and(67). It can satisfy the strict requirement of functionality,(68), cost, volume, and power consumption of the particular application. With rapid development of(69)design and manufacture, CPUs became cheap. Lots of(70)electronics have embedded CPU and thus became embedded systems. For example, PDAs, cellphones, point-of-sale devices, VCRs, industrial robot control, or even your toasters can be embedded system.

单选题
2022-01-02 03:49
A、cost-oriented
B、applieation-oriented
C、efficiency-oriented
D、consumption-oriented
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正确答案
B
试题解析
解析：试题(66)分析；A．cost-oriented为面向成本控制，B．application-oriented为面向应用，C．efficiency-oriented为效率优先，D．consumption-oriented为面向消费，故B选项更符合嵌入式系统的定义。 嵌入式系统是以应用为中心，以计算机技术为基础，并且软硬件可裁剪，适用于应用系统对功能、可靠性、成本、体积和功耗等有严格要求的专用计算机系统。它一般由嵌入式微处理器、外围硬件设备、嵌入式操作系统以及用户的应用程序等四个部分组成，用于实现对其他设备的控制、监视和管理等功能。  试题(67)分析：嵌入式系统是软硬件可裁剪的，包含硬件和软件两个方面，故和 software相对应的为hardware，应选D。  试题(68)分析：嵌入式系统对功能、可靠性、成本、体积和功耗等有严格的要求，该选项主要考察对嵌入式的可靠性的要求，在这四个选项中，C选项reliability为可靠性的准确表达，故应选C。  试题(69)分析；随着集成电路(IC)设计和制造技术的快速发展，CPU的价格变得越来越便宜。选项A.IC全称为Integrate Circuit，为合适的选择。  试题(70)分析；越来越多的消费类电子中使用了嵌入式CPU，也就成为了嵌入式系统。如PDA、手机、POS机、VCR和工业机器人控制器等。故C选项consumer符合消费类电子的意思，为该题的正确选项。
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