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Message: <blockquote data-quote="lankavee" data-source="post: 4776927" data-attributes="member: 194046">Microcontrollers can be classified into many categories, based on different criteria. You may already aware that a microcontroller can (and should) be programmed in order to make it for any use. In another words, you can write a program (basic, C or assembly language, details will follow later) and save it on the chip, where it will run your code as long as the power is applied, each time and every time.  You may already know how to write a program on your computer either basic, C, Java, pascal, PHP etc. With the computer, your program mostly dealing with inputs from keyboard and mouse, where as output goes to screen. Nowadays, TCP/IP communication is very common, and it is not surprising if you know how to program a computer to talk to another computer through Ethernet. Occasionally, some people get the chance to program the computer to deal with serial port, parallel ports, USB etc. communicating with outside world.  In any case, it is simple as you save the code in hard disk, and run the compiler or interpreter of your language to “run” it.  You will have to do the same in microcontroller; however you don’t necessarily have a keyboard, a mouse or a video display connected to it. So how can this be? Easy, you program the chip with an external device (will explain later), fix the chip in circuit, power it up, and you are in the game.  Continued...</blockquote>

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