I am very new to electronics and just started learning about logic gates.
I read about the AND gate and learned about its boolean algebra, but I also wanted to make one myself using MOSFETs which I learned about earlier. The AND-gate I made was pretty much identical to the one in picture 1. The only difference is that mine was implemented in an entire circuit. But I will use this picture because it's simpler and illustrates the problem more clearly.
Not sure if this was a good (or best) way to create an AND-gate using MOSFETs I started looking on the web for optimal constructions. Then I found this earlier post on engineering exchange which is very much a similar question to mine. However, it did not help me because I did not actually understand the explanations. This is because the explanation was meant for people with more advanced knowledge.
There is a picture of the AND-gate with the inverter below:
Here are my questions:
Could you explain to a less knowledgeable person in electronics why the AND-gate is improved by adding the inverter?
Is this inverter trick normally used in other types of logic-gates?
Is this AND-gate design using the inverter considered the "best AND-gate design" or are there multiple different designs for different use cases?
This is somewhat similar to question 3: Is there a generally considered best design for all the different logic gates? Is there a way to prove logic-gate design x is more efficient than all the other ones? Or does it mostly come down to price when producing them as long as it gets the job done?