embedded的特点就是专用，不是general use？

google了这个：


An embedded system is a computer system designed for specific control functions within a larger system, often with real-time computing constraints.[1][2] It is embedded as part of a complete device often including hardware and mechanical parts. By contrast, a general-purpose computer, such as a personal computer (PC), is designed to be flexible and to meet a wide range of end-user needs. Embedded systems control many devices in common use today.[3]
Embedded systems contain processing cores that are either microcontrollers or digital signal processors (DSP).[4] The key characteristic, however, is being dedicated to handle a particular task. Since the embedded system is dedicated to specific tasks, design engineers can optimize it to reduce the size and cost of the product and increase the reliability and performance. Some embedded systems are mass-produced, benefiting from economies of scale.
Physically, embedded systems range from portable devices such as digital watches and MP3 players, to large stationary installations like traffic lights, factory controllers. Complexity varies from low, with a single microcontroller chip, to very high with multiple units, peripherals and networks mounted inside a large chassis or enclosure.

所有跟帖： 

• 这么简单？ -Cherrylover- ♀ (87 bytes) () 10/11/2012 postreply 16:34:17

• 估计他正疼着呢.哈哈. -999朵玫瑰- ♀ (0 bytes) () 10/11/2012 postreply 16:50:18

• 哈哈.那叫EMBEDDED, 见识了. -999朵玫瑰- ♀ (0 bytes) () 10/11/2012 postreply 16:49:46

• EMBEDDED只是个通俗名称而已，其实并不严格，关键要看名称下的定义。 -Cherrylover- ♀ (134 bytes) () 10/11/2012 postreply 17:10:36