DC1

DC1 is a designation used in multiple domains, with different meanings depending on context. It commonly appears in computing, aviation, and product labeling, among other fields, and there is no single universal definition for the term.

In computing and telecommunications, DC1 stands for Device Control 1, a control character in the ASCII character set with the hexadecimal value 0x11. It is part of the set of control codes used to manage devices and communications. In some serial communication schemes, DC1 is associated with software flow control and, together with DC3, can be used to resume and pause data transmission (XON/XOFF flow control).

In aviation history, the Douglas DC-1 was an early American airliner prototype produced by the Douglas Aircraft Company in the early 1930s. Although it did not enter production, the DC-1 informed subsequent designs that led to the DC-2 and DC-3, aircraft that became foundational to the development of modern commercial air travel.

Beyond these contexts, DC1 may appear as a model number, catalog code, or project identifier in various products and documentation. Because DC1 is a generic alphanumeric label, its precise meaning is determined by the surrounding context and field of use.