The Hewlett-Packard Company , commonly known as HP, is currently the world's largest information technology corporation and is known worldwide for its printers and personal computers. Headquartered in Palo Alto, California, United States, it has a global presence in the fields of computing, printing, and digital imaging, and also provides software and services. The company which once catered to engineering and medical markets now markets to households with products such as cameras and ink cartridges found in grocery and department stores.