(Advanced Technology bus) IBM's offical name for the 16-bit ISA bus, introduced with the IBM PC AT in 1984. The AT Attachment (ATA) moniker for IDE drives evolved from this naming. See ISA bus, AT and PC data buses.
"AT bus." YourDictionary, n.d. Web. 17 August 2018. <http://www.yourdictionary.com/at-bus>.
AT bus. (n.d.). Retrieved August 17th, 2018, from http://www.yourdictionary.com/at-bus