A0, A-0, A0, or a0 may refer to.
An air purifier or air cleaner is a device which removes contaminants from the air in a room.
Amber Air (Gintarinės avialinijos) was an airline based in Vilnius, Lithuania, operating scheduled and chartered flights out of Palanga International Airport.
In logic, mathematics, and computer science, the arity of a function or operation is the number of arguments or operands that the function takes.
ASCII, abbreviated from American Standard Code for Information Interchange, is a character encoding standard for electronic communication.
In computing and telecommunication, a control character or non-printing character is a code point (a number) in a character set, that does not represent a written symbol.
In mathematics and computing, hexadecimal (also base, or hex) is a positional numeral system with a radix, or base, of 16.
In astronomy, the main sequence is a continuous and distinctive band of stars that appear on plots of stellar color versus brightness.
Newline (frequently called line ending, end of line (EOL), line feed, or line break) is a control character or sequence of control characters in a character encoding specification, e.g. ASCII or EBCDIC.
In morpheme-based morphology, the term null allomorph or zero allomorph is sometimes used to refer to some kind of null morpheme for which there are also contexts in which the underlying morpheme is manifested in the surface structure.
The octet is a unit of digital information in computing and telecommunications that consists of eight bits.
Zero address arithmetic is a feature of a few innovative computer architectures, whereby the assignment to a physical address space is deferred until programming statement execution time.