I'm in a digital logics class this semster, where the focus is essentially boolean algebra and using it to compute things (well, eventually, right now we're still doing truth tables and optimization of simple functions). No, this isn't homework, it is just something I thought of relating to the material in the class. We briefly went over the construction of NMOS, PMOS, and CMOS versions of the various gates, and, according to my book, Nand in CMOS is(excuse my lack of art skills): To get an And gate according to my book, you'd add a two-transistor CMOS inverter such that F (the output) would be inverted and that is how And gates are made. My question is: Wouldn't simply switching the 'PMOS Transitors' and 'NMOS Transistors' like below make an and gate? : Or is there some electronic reason that wouldn't work to make an And gate with the same transistor count as a Nand gate?

Quote:Original post by Extrarius
No, this isn't homework, it is just something I thought of relating to the material in the class.

I'll let you get away with it this time; however, if you read the Forum FAQ you'll see that, since its impossible to distinguish homework from other schoolwork, basically anything school related is off topic.

Also, you'll also see that the Forum FAQ asks that you show your own work before a post that is school or similar will even be considered to remain open. Fortunately, you created some images that satisfies this requirement!