History and Terminology
The PATA standard was originally conceived as the "PC/AT Attachment" because its primary feature was a direct connection to the 16-bit ISA bus introduced with the IBM PC/AT. The "AT" in "IBM PC/AT" refers to "Advanced Technology," but the ATA specifications simply use the name "AT Attachment", to avoid possible trademark issues with IBM.
Read more about this topic: Parallel ATA
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“Books of natural history aim commonly to be hasty schedules, or inventories of God’s property, by some clerk. They do not in the least teach the divine view of nature, but the popular view, or rather the popular method of studying nature, and make haste to conduct the persevering pupil only into that dilemma where the professors always dwell.”
—Henry David Thoreau (1817–1862)