= !What is an Embedded System |
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= This is a short explaning speech about the embedded systems |
= written by me, Daniel Jiseok Song. 2001-11 |
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= An embedded system is a special computer system dedicated to work for one or several purpose. And its importance is getting greater. |
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= A. Attention-Gainer: |
= You probably watched TV today. Many of you should have Walkman or portable radio. Electronic shaver, your cellular phone, PDA, handheld game machine¡¦ etc, do you find out what is the common point of these? They¡¯re all embedded systems. |
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= B. Ethos-Establisher: |
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- Do you know the embedded system? Probably you don¡¯t know. Have you heard about the word ¡°embedded system? No? But you use embedded systems all day in diverse ways even if you don¡¯t know about them. (Regardless whether you know it or not, you¡¯re getting familiar with the system, and these systems are getting more common is our life.) |
+ Do you know the embedded system? Probably you don¡¯t know. Have you heard about the word ¡°embedded system? No? But you use embedded systems all day in diverse ways even if you don¡¯t know about them. (Regardless whether you know it or not, you¡¯re getting familiar with the system, and these systems are getting more common in our life.) |
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= C. Preview: |
= I¡¯ll explain these things within this speech. |
= First I¡¯ll explain what the embedded system is. |
= And second, I¡¯ll inform you that the embedded systems are spreading explosively. |
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= II. Body |
= A. First Main Idea: |
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= What is the embedded system? I would show you some features they have. |
= They¡¯re usually embedded in other products. |
= They are working standalone. |
= They are infrequently redesigned. Their functionality is mostly fixed. |
= They are usually small computer system. It means that they have CPU, RAM and others like your personal computer. |
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= Is that difficult? I¡¯ll show you an example |
= 1. Support |
= You probably have cellular phone. Cellular phone is an embedded system. |
= It is working standalone. |
= It is infrequently redesigned. After you bought it, it¡¯s very rare to upgrade your phone¡¯s inside. It means reprogrammed. |
= It is small computer system. It has a special purpose CPU, and RAM, and other components computer have. Also you should boot up your cell phone after you turn it on, like your PC, because it¡¯s complicated device. |
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= 2. Support |
= And remote controller is also an embedded system. |
= Believe or not it has CPU too. It¡¯s small computer system. |
= It gets user¡¯s button stroke, and determine appropriate command and translate it into infrared signal. |
= 3. Support |
= Example of it, household electronic appliances |
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= \ Transition to next main point: lets look at the history of it from past. |
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= B. Second Main Idea: |
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= \ Embedded systems in the past. They were dumb, not intelligent, limited useful. People thought embedded system is just a machine like typewriter or radio. |
= 1. Support |
= ¡°Because¡± Circuit speed was very slow, circuit capacity is limited, ROM or RAM size. |
= 2. Support |
= Because the software technology for complex system is not much developed. |
= 3. Support |
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= Transition to next main point: But these days, this prejudice cannot be applied. |
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= C. Third Main Idea: New fields to use the system are emerging. |
= 1. Support |
= Personal handheld devices are increasing. |
= 2. Support |
= Technology for performance, minimizing is developed, circuit technology, Software methodology or techniques. |
= 3. Support |
= Technologies for adapting new field are developed, like visual recognition, sensor techniques, and powerful electronic actuators, etc. |
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= \ Transition to next main point: |
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= III. Conclusion |
= A. Summary: |
= B. Concluding Idea: same as thematic statement |
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