an all-round Engineering and Technology Geek, founder EjaadTech and Pop Up Learning – currently IT Manager at FESF
What AVR is a microcontroller (uC) from Atmel, it has 8-bit architecture which means that what you can store in it has to be somewhat compatible to 8 bits (1 byte) of memory. AVRs are a family of uC which are relatively easy to get the hang on and are quite commonly available having the…
this rather subtle point help clarifies the concept of a ground: it is just a symbol on your circuit that indicates your reference node. A circuit does not need to have an explicit ground connection to Earth.