This is interesting, six additional posts and not one of them gives any clue as to what the answers to the original questions might be
I'll start:
1. What is ADC?
ADC usually stands for Analog to Digital Converter.
These take an analog signal (a continuously variable signal) and quantize it into a digital word or words.
There is also DAC, which stands for Digital to Analog Converter.
Those take the digital word or words and convert it to an analog signal, but the analog signal could possibly be discrete steps rather than the original continuously variable signal.
Ok guys, take it from here. I did #1 so you can follow with #2, etc. if you like
ADC example
1 bit: output=0 if the in put is near 0 volts, output=1 if the input is near 1 volts.
2 bit: output=0,1,2, or 3 if the input is 0, 0.25, 0.5, or 0.75
3 bit: output=0,1,2,3,4,5,6,7 0 to 1 volts in 1/8 volt steps
4 bit: output=0 through 15 0 to 1 volt in 1/16 volt steps
8 bit 0 to 255 in 3.9mV steps
16 bit 0 to 64535 in 16uV steps
Resolution has to do with how small a change the ADC can see. Example 16uV is a very small amount. High Resolution.
Accuracy: No matter how good the resolution is, if the ADC input is 3 volts but it reads 4.0000001 volts, it is not good.
Linearity:
There is a "0" error and a "full scale" error. If the input range is 0 to 1 volt then the data sheet will give a accuracy measurement at these two points. All other points should be a strait line between 0 and 1. Example 0.5 volts should give a number exactly 1/2 full scale. The problem the line is not strait.
Yes if the monitor of the reader can show good enough that the word 'link' is actually written in blue rather than the regular black. Some monitors dont show thin text colors as well as others, so it might be better to indicate a little better where the link actually is.
Also, if you want readers to Google everything why dont you just ask Electromaster to provide a direct link to Google so that when readers click on ElectroTech they get transferred to Google instead. Save you not much, but a little typing there (ha ha)