Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
A system is arranged into 2 subparts which must work jointly to accomplish a given function (AND gate). Each subpart is composed of 2 groups, i.e. can be of 2 types (OR gate), to work each type must satisfy some constraints (AND gate between single units).
