What is the difference between Analog and Digital?
Terms like analog and digital are something we’ve heard about during our school days, and in terms of electronics, these two terms play a huge role. A signal can be either analog or digital, and the differences between them can sometimes be huge. The main difference is that when operating with analog signals there are infinite possibilities, whereas digital (discrete) signals operate in a finite realm where the possibilities are limited. So, what is an analog signal? What is a digital signal? What are the key differences? You’ll learn all that at more in this tutorial! Electronic signals here are basically time-varying variables. The signals contain some sort of information and the varying quantity in electrical engineering is either current or voltage. More often than not, it’s voltage. All in all, a signal represents a change of voltage or current over time. Signals are all around us. A signal from your Wi-Fi receiver, a Bluetooth signal, an infrared signals, a signal from the radio...