Weird result

Posted by Bart on
URL: http://nand2tetris-questions-and-answers-forum.52.s1.nabble.com/Weird-result-tp4025316.html

Hi, for some reasons I cant get the builtin Nand chip to do what I want. Creating my first not and or gates is failing. Ive posted imaged to screenshots below

Its really weird to me that the builtin Nand is sometimes returning 1 when both inputs are also 1 and other times it returns 0 when both inputs are 1.

Is this a bug or am i doing something wrong?

EDIT: Nevermind! my mistake was that i didnt click the EVALUATE button after changing the values. Ive removed the screenshots since they contained working answers.

This tutorial saved me:
http://www.nand2tetris.org/tutorials/PDF/Hardware%20Simulator%20Tutorial.pdf