There is no specific definition of embedded system

Is smart phone an embedded system ？

There is no specific definition of embedded system , Generally, it refers to being different from the general PC Civil operating system , Used to operate inside special equipment . So like smart phones 、 Tablets, these , It can be counted as , It doesn't count .

actually , In the software development industry , Embedded system development , It usually refers to the development of embedded real-time operating system . Real time operating system is RTOS.

Of course , Now Android /iOS Development is also embedded , But certainly not RTOS,RTOS It's like VxWorks/uCos/ThreadX these .

therefore , In fact, what is embedded system has not been defined yet , but RTOS There is a definition , Real time is to check whether it is RTOS A standard of .

C Is language really difficult to learn ？ If you want to get started with embedded MCU, you must know

The article is relatively long , More words , You can first open the avatar and pay attention to me , Then take your time ,/// Insert a ： At the beginning of this year, I recorded a set of systematic introductory single chip microcomputer tutorial , If you want, just ask me for it. It's free , I can send a private message ~ Click the black font in the lower left corner of my avatar and I can also get it . I've been relatively idle recently , Take me to finish the design , Take students to provincial or above competitions ///

Anything you can do with your heart , You can do ; If you want to do anything in a field, you can be confident and even comfortable , You'd better have a systematic thinking about this field , How to have a systematic thinking ？ You have to go through enough things , Think about enough questions , Overcome enough difficulties , Then a handy tool in this process will play a key role . Why can we persist in some things , But not for other things ？ In addition to interest , Our situation in the initial stage also plays an important role .

Back to the question , Many of us who study computer always have difficulty recognizing the essence of computer , Personally, I think this is related to computer education in China , It has little to do with our own efforts . Take me for example , From school to work , I've never been very confident in myself , Because there is always a problem bothering me , After encountering a practical problem , There is always no good idea , Always unable to quickly decompose the problem .

In limine , Think you are inexperienced , Too little contact with object-oriented ideas , But I found that reading books such as design patterns is better than not reading , You can't make yourself clear . This question puzzled me for a long time , There's another problem , Some people are afraid of the kernel source code , assembly language , But I can enjoy it , I also don't understand why others are so afraid of these things . For a long time , For a long time , I found that some people can't do well in computers because they don't work hard , Others can't do well with computers because they don't find the direction , There is no good tool to help him grasp the essence of computer .

And I belong to the latter , Why do I have such a situation , Because I never like recursion , I came into contact with recursion when learning data structures , But it is taught that recursion is inefficient , So I think recursion is a bad thing . This prejudice lasted for many years , However, it is inefficient to execute computer programs with recursion , It doesn't mean that thinking with recursion is inefficient .

Friends interested in MCU can come to me , I recorded some introductory tutorials about MCU , If you need children's shoes, just ask me for them , Free of charge , Private confidence in me “ Miss Lin ” You can take ～ Click to open my avatar to receive

What is the essence of computer ？ There are only three things in total ： The pointer , Recursion and lambda calculus , Pointers play a decisive role in the operating system , The operating system manages everything in order through the pointer ;

Recursion is the core of proof and Algorithm , Proving and using algorithms to solve problems is the reason why we invented computers ;lambda Calculus is a computer language , The core of the compiler system , And they are our most basic tools .

C Language is useful , Its pointer is particularly important , It is the foundation to help us understand the operation of computer programs , But I'm a beginner C Language really takes a lot of effort , The reason is very funny , Because of our C The language teacher is a big tongue , You can hear two words clearly at the beginning of a sentence , And this teacher is not very responsible , Everything is perfunctory . And we didn't have the course of programming language at that time , I haven't talked about programming language , So a whole semester , I'll get it C In language “ Equal to the sign ” Is an assignment number , Not the equal sign in Mathematics .

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