(also) Automated Telling Machine. So it's not "I'll get my cash out of the ATM machine" you heathens.
In the same way that it's not "NT Technology", "HIV Virus" or "QE Engineer", right? Methinks these need their own page... --AlexChurchill
Nor is it "PIN Number" -- Bobacus
Or (on the same line) "Automatic ATM Machine"... -- Senji
(also) Asynchronous Timedivision Multiplexing. A computer network technology, notably used by some telecomms backbones. Believed to provide QualityOfService