INDEX

WHY DIGITAL PREFERED OVER ANALOG IN ROBOTICS?
● The main reason is the effect of noise is less in digital. Suppose if you take a TTL (5V) circuit. Logic HIGH v(1) >2.4V (it is not accurately 5V) and Logic LOW v(0) < .8V . For example in communication, analog voltage 3.4V might be received as 3V or some other voltage not exactly 3.4V, but in case of digital communication Logic HIGH is greater than 2.4V (if you send Logic HIGH it has more probability of receiving Logic HIGH than analog communication).
● Easy for circuit debugging digital circuit than analog circuit, because in analog circuit you mostly require multimeter, mostly CRO. But in  digital circuit we require LED and multimeter. So it is easy to do in room itself
● Easy processing and computation with microcontrollers. More help will be available in internet and more support in forums and yahoo groups.
● When you use digital circuit you should be careful about the power supply you are using, otherwise the IC will get burnt,sometimes due to under voltage or mostly due to over voltage. If you use analog
circuit you should not get bothered about the power supply because a normal transistor D880 works with Vcc=1.5V to 60V and any voltage between these two are acceptable. But digital circuit there is
some limit for LOGIC HIGH and LOGIC LOW.
● Power consumption of digital circuit is less compared to analog.
● The use of multiple power supplies and the circuit making burden can be avoided.