原创 Hello Microcontroller!

I'm a programmer.Every time I get up with a programming language,I will begin with the 'Hello World'.Now then I plan to study microcontroller.Let'u go on with microcontroller in English in my blog.I hope you will help me and give me some advice.

    First,I want to know the following problem.'What is a microcontroller?'I perfer the search engine 'Google'.(Why?English).I get some useful information.

''A microcontroller (also MCU or µC) is a computer-on-a-chip.''

MCU and uC are very important because we will often find them in technoligy articles. 

''It is a type of microprocessor emphasizing high integration, low power consumption, self-sufficiency and cost-effectiveness, in contrast to a general-purpose microprocessor (the kind used in a PC).''

From here,I konw MCU is different from PC.Also it should be called PC-On-Chip.

 ''In addition to the usual arithmetic and logic elements of a general purpose microprocessor, the microcontroller typically integrates additional elements such as read-write memory for data storage, read-only memory, such as flash for code storage, EEPROM for permanent data storage, peripheral devices, and input/output interfaces. At clock speeds of as little as a few MHz or even lower, microcontrollers often operate at very low speed compared to modern day microprocessors, but this is adequate for typical applications. They consume relatively little power (milliwatts), and will generally have the ability to sleep while waiting for an interesting peripheral event such as a button press to wake them up again to do something. Power consumption while sleeping may be just nanowatts, making them ideal for low power and long lasting battery applications.''

This prograph tells us the orgnization of microcontroller.I find EEPROM play an important role in mcirocontroller.

''Microcontrollers are frequently used in automatically controlled products and devices, such as automobile engine control systems, remote controls, office machines, appliances, power tools, and toys. By reducing the size, cost, and power consumption compared to a design using a separate microprocessor, memory, and input/output devices, microcontrollers make it economical to electronically control many more processes.''

Microcontroller is very useful.