[[Category:ElectroKit]]
== Goal ==
* First step into logic.
== Level ==
* Knowing how to use a breadboard
* Knowing how to use a breadboard
== Component ==
* Only one logic two nand gate arraychip (I used the ???).
== How to ==
The logic circuit of the chip is as followed :
[[File:Adderlogic.gif.gif]]
From this chip, we would like to will make a an half adder. It is one of the basic component of everyCPUevery CPU as it is adding two bits. It's use is to have two bits. They represent a state either 1 or 0. We will add them with the following scheme :<pre>
1 + 1 = 10
1 + 0 = 01
^ this bit is the most significant bit. We call it C1 later on.
^ this bit is the least significant bit. We call it C0 later on.
</pre>Just follow theschema. You will need two chip to implement the half adder.
[[File:Halfadder.gif]]
== What is happening there ? ==