Let's say that you want to record the day's mean temperature accurately. You hook up a temperature sensor to an analogue-to-digital converter, then record that value with a Raspberry Pi. When building this kit, you measure the output of your temperature sensor with your Fancy oscilloscope, and see a signal: A continuously-varying signal between 100 and 101 mVYour oscilloscope output. A nice smooth line. This has a mean of 101.1 mV. Running your logger and looking at the output, you see someth...
