Hello, everybody. We all have at least heard the terms analog, digital and discrete. In today's era of modern technologies, we, knowingly or unknowingly, use accessories whose functioning blocks are based on above-mentioned terms. So, it's quite important for us to know the meaning of those terms and also the significance they carry. Analog Signal Analog signals are the signals which are continuous throughout the time axis and can have any value of amplitude. Thus, an analog signal is continuous in both time and amplitude which means it has a value at every timestamp and the amplitude can be anything. For reference, look at the image below. Forgive me for my bad drawing but I think it will be enough to understand. In this image as we can see, the signal has value at every timestamp. If the time axis is measured in seconds, we can get the value of the signal at 3.6575528 seconds also because the signal is continuous in time. Also, there is no curbing in amplitude. Amplitu