Alexa – your new personal assistant

What is Alexa? Alexa is Amazon's virtual personal assistant. It has been around for about two years now. It was ...

AUTODESK EAGLE – Tips & Tricks 1

Most hobbyists and many professionals use EAGLE CAD as a daily tool in designing schematics and laying out PCB. Iā€™m ...

Why are Crystal Oscillators required?

Crystal oscillators have only one function. That is to provide stable clock pulses to the digital circuit. Almost all ...

How does a watch keep working at the same pace until the last drop of a battery cell?

Well, this is actually a very interesting question technically. And it gets us to how quartz movements work. I beg the ...

Matrix Keypad with Atmega8 – part 2

In the previous post - Matrix Keypad with Atmega8 - part 1, we discussed why a matrix keypad is useful and how we can ...

Matrix Keypad with Atmega8 – part 1

Many embedded applications require a large number of keys connected to a computing system. For example - a PC ...