AC Computing Abbreviation

Arteria Carotis

Assignee City

Authorization Center

Access Control

In the fields of physical security and information security, access control (AC) is the selective restriction of access to a place or other resource. The act of accessing may mean consuming, entering, or using. Permission to access a resource is called authorization.

Ascension Island

Analog Computer

Acoustic Coupler

In telecommunications, an acoustic coupler is an interface device for coupling electrical signals by acoustical means usually into and out of a telephone instrument. The link is achieved through converting electric signals from the phone line to sound and reconvert sound to electric signals needed for the end terminal, such as a teletypewriter, and back, rather than through direct electrical connection.

Administrative Committee

Administration Center