All matter such as solids, liquids, and gases, is composed of atoms. Therefore, the atom is considered to be the basic building block of matter. However, atoms are almost always grouped together with other atoms to form what is called a molecule. Only a few gases such as helium are composed of individual atoms as the structural unit. Atoms are extremely small.
What is the Difference between USB Type A and USB Type B Plug/Connector? In the Catalog for USB-232/485 Series Interfaces, it says that the 1-port interface has a USB Type A plug whereas the 2- and 4-port interfaces have a USB Type B connector. What is the difference?
USB Type A to A Cables. These are USB Type A to Type A Cables used when BOTH devices need a type A connection. USB Type A to A Extension Cables. These are USB Type A Male to Type A Female Extension Cables typically used to extend a standard USB cable. USB Type A to Micro B 5-Pin Cables. These are USB Type A Male to MICRO-B 5 Pin Cables now used by most modern cell phones, smart phones, and blackberries.