We are living in the Embeldded World. You are surrounded with many embedded devices and your daily life largely depends on the proper functioning of these gadgets. DVD, Radio, Music player of your living room, Washing Machine or Refrigerator in your kitchen, Card readers, Access Controllers, navigation devices of your work space enable you to do many of your tasks very effectively. Apart from all these, many controllers embedded in your car take care of car functioning between the bumpers and most of the times you tend to ignore all these controllers.

In recent days, you are showered with variety of information about these embedded controllers in many places. All kinds of websites and journals regularly dish out details about latest technologies, new devices, fast applications which make you believe that your basic survival is controlled by these embedded products. Now you can agree to the fact that these embedded products have successfully invaded into our world. You must be wondering about these embedded controllers or systems. What is this Embedded System?

The computer you use to write your mails, or create a document or analyze the database is known as the standard desktop computer. These desktop computers are fabricated to serve many functions and applications.

You need to install the relevant software to get the required processing facility. So, these desktop computers can do many things. In contrast, embedded controllers carry out a specific work for which they are designed. Most of the time, engineers design these embedded controllers with a particular goal in mind. So these controllers cannot be used in any other place. Theoretically, an embedded controller is a combination of a piece of microprocessor based hardware and the suitable software to undertake a specific task.

These days designers have many choices in microprocessors/microcontrollers. Especially, in 8-bit and 32-bit, the available diversity really may overwhelm even an experienced designer. Selecting a right microcontroller may turn out as a most difficult first step and it is getting complicated as new devices continue to pop—up very often.

Today the tendency goes toward the 32-bit ARM architecture. ARM Cortex is the latest evolution on this field. But despite accessibility, low prices and enormous power of 32-bit microcontrollers, many prestigious companies still use 8-bit microcontrollers.

In the 8 bit segment, the most common and used architecture is Intel’s 8051 family. Market acceptance of this particular family has driven many semiconductor companies to develop something new based on this particular architecture. You can find this 8051 in a variety of systems, flavor and definitely you cannot see this kind of variations with any other architecture. Even after 25 years of existence, semiconductor companies still come out with some kind of device using this old and proven 8051 core.

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