Re: Carry Select Adder

Posted by tungsten on Mar 05, 2017; 1:51am
URL: http://nand2tetris-questions-and-answers-forum.52.s1.nabble.com/Carry-Select-Adder-tp4025925p4030820.html

Other than an intellectual exercise, this is moot. Because all of these adders involve many more gates, I expect that they will all run slower in the HardwareSimulator.

My problem with the ripple carry adder is that it is serial... Anything that can compute some parts, if not all, in parallel is ideal. I'm interested in performance in a general sense, outside the provided Hardware Simulator.

I think that you'd need to code these in an industrial strength HDL (Verilog or VHDL) and run them on a real simulator to figure that out.

I'll do so.

Do you by chance know the type of adders used in microcontrollers such as Atmega and PIC? I looked through the datasheets but this is not something they specify.