AT

1. Short for Advanced Technology, AT is an IBM computer introduced in 1984. The base model AT computer contained an 80286 processor, 256k of RAM and a 1.2MB floppy disk drive. The AT was also available with 512k of RAM and a 20Mbyte disk drive.

2. Name of the "@" symbol, when describing an e-mail address. You will commonly hear someone say something similar to "support 'at' computerhope 'dot' com", which is the same as support@computerhope.com.
   
   An additional listing of computer keyboard keys can be found by clicking here.
   

3. Short for Azores Time.

4. Modem strings used to initialize and control a computer modem. See our AT command page for a listing of the basic Hays compatible legacy modem AT strings.

Also see: AT Keyboard, E-mail, Form factor, XT