Unit prefix The prefix "bronto", as used in the term "brontobyte", has been used to represent anything from 10 to 10 bytes, most often 10. The SI includes standardised prefixes for 10 (peta), 10 (exa), 10 (zetta) and 10 (yotta). In 2010, an online petition sought to establish hella as the SI prefix for 10, a movement that began on the campus of UC Davis. The prefix, which has since appeared in the San Francisco Chronicle, Daily Telegraph, "Wired" and some other scientific magazines, was recognised by Google, in a non-serious fashion, in May 2010. Ian Mills, president of the Consultative Committee
EXA EXA In computing, EXA is a graphics acceleration architecture of the X.Org Server (see also X Window System) designed to replace XAA (the XFree86 Acceleration Architecture) and to make the XRender extension more usable, with only minor changes needed to adapt XFree86 video drivers written to use XAA; it was designed by Zack Rusin and announced at LinuxTag 2005 and first released with X.Org Server version 6.9/7.0. Historically, a distinction has been made between 2D and 3D acceleration. 2D acceleration was provided by the venerable XFree86 Acceleration Architecture, XAA, which made the video card's 2D hardware acceleration available to the