The financial definition for Automated teller maching (ATM):
Computer-controlled terminal located on the premises of financial institutions or elsewhere, though which customers may make deposits, withdrawals or other transactions as they would through a bank teller. Other terms sometimes used to describe such terminals are customer-bank communications terminal (CBCT) and remote service unit (RSU)Groups of banks sometimes share ATM.
Automated bond system (ABS)
Automated bond system (ABS) The computerized system that records bids and offers for inactively traded bonds until they are cancelled or executed on the NYSE.
Automated Clearing House (ACH)
Automated Clearing House (ACH) A collection of 32 regional electronic interbank networks used to process transactions electronically with a guaranteed one-day bank collection float.