Just wanted to throw a quick question out there and see what the response is. What is your definition of an analog and digital waveform?
The reason I ask is that if you look around the Internet, people have a lot of perceptions about what an analog signal is. I have always believed it to be a waveform that can vary in voltage over time. It can be AC or DC and can be a sine wave or just a wave which varies in amplitude over time. I would relate this to a throttle position sensor or thermistor which varies voltage over a given time period. A lot of sites I see, say it is only an AC signal which varies positive and negative voltage over time. Again, I think it can be just positive, just negative or both depending on purpose and source voltage being used.
The reason I ask is that if you look around the Internet, people have a lot of perceptions about what an analog signal is. I have always believed it to be a waveform that can vary in voltage over time. It can be AC or DC and can be a sine wave or just a wave which varies in amplitude over time. I would relate this to a throttle position sensor or thermistor which varies voltage over a given time period. A lot of sites I see, say it is only an AC signal which varies positive and negative voltage over time. Again, I think it can be just positive, just negative or both depending on purpose and source voltage being used.