HD Computing Abbreviation

Hard Disk

When you save data or install programs on your computer, the information is typically written to your hard disk. The hard disk is a spindle of magnetic disks, called platters, that record and store information. Because the data is stored magnetically, information recorded to the hard disk remains intact after you turn your computer off.

High Density

Head-Mounted Display

Hardware Development

Harmonised Document

Hatteland Display

High-Density

Home Depot, Inc.

Head-Up Display

A cockpit system where data from flight instruments is projected onto a screen or the wind-screen so that the pilot can see it with-out having to look down.