“嵌入式硬件系统”的最佳描述是什么？ [英] What's the best description for "embedded hardware system"?

问题描述

当我听到这一点，我一直在想一个移动设备。但为什么硬件嵌入在那里？硬件不是整个设备吗？为什么个人计算机没有嵌入式硬件系统？

When I hear that, I always think about an mobile device. But why is the hardware "embedded" there? Isn't the whole device the hardware? Why is a personal computer no embedded hardware system?

推荐答案

在今天的世界中，嵌入式只是指一个系统与一个或多个以下特征：

In today's world embedded simply refers to a system with one or more of the following traits:

• 单一用途（即不是通用计算机，如您的桌面）


• 固件而不是软件 - 仍然是软件，但不是很容易更新（闪存等）


• 硬件和软件一起设计为一个单元




• 实时计算


• 内存集成在CPU上


• 微控制器而不是微处理器


• 预期的高可靠性（您不必重新启动洗碗机或微波炉）

• Single purpose (ie, not a general purpose computer, like your desktop)
• Firmware rather than software - still software, but not as easily updated (flash, etc)
• Hardware and software are designed together as a unit
• Different, perhaps more rigorous testing as software updates are not desired
• Real time computing
• Memory integrated on the CPU
• Microcontroller rather than microprocessor
• Expected high reliability (you shouldn't have to reboot your dishwasher or microwave)

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