MICROCONTROLLER
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An ideal artificial hand should match the requirements of prosthetics and humanoid robotics.

It can be wearable by the user which means that it can be perceived as part of the natural body and should replicate sensory-motor capabilities of the natural hand. However ,such an ideal bionic prosthesis is still far from reality.

This paper describes the design and fabrication of a novel artificial hand based on a biomechatronic and cybernetic approach. The approach is aimed at providing natural sensory-motor co-ordination, biomimetic mechanis ....etc

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Please give me the answer for construction and working of photo transistor and its features
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PHOTOTRANSISTOR A LEAP OF OPTOELECTRONICS

Like diodes, all transistors are light-sensitive. Phototransistors are designed specifically to take advantage of this fact .the most-common variant is an NPN bipolar transistor with an exposed base region. Here, light striking the base Replaces what would ordinarily be voltage applied to the base “ so, a photo- transistor amplifies variations in the light striking it. Phototransistors may or may not have a base lead . (if they do, the base lead allows us to bias the phototransis ....etc

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