Lesson 9 .... Analog to Digital Converter.

Analog to Digital Converter:

As the peripheral signals usually are substantially different from the ones that microcontroller can understand (zero and one), they have to be converted into a pattern which can be comprehended by a microcontroller. This task is performed by a block for analog to digital conversion or by an (ADC). This block is responsible for converting an information about some analog value to a binary number and for follow it through to a (CPU) block so that (CPU) block can further process it.

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Now it is no Lesson .... Microcontroller looks like inside.

Finally, the microcontroller is now completed, and all we need to do now is to assemble it into an electronic component where it will access inner blocks through the outside pins. The picture below shows what a microcontroller looks like inside.

Thin lines which lead from the center towards the sides of the microcontroller represent wires connecting inner blocks with the pins on the housing of the microcontroller so called bonding lines. Chart on the following image represents the center section of a microcontroller.

For a real application, a microcontroller alone is not enough. Beside a microcontroller, we need a program that would be executed, and a few more elements which make up a interface logic towards the elements of regulation (which will be discussed in later lessons).

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