Along with the conventional "central processing unit" [http://en.wikipedia.org/wiki/CPU], in the [Tcl] world during the '90s "CPU" stood for Computerized Processes Unlimited, Inc., of Metairie, Louisiana. CPU sponsored ... and employed [Gerald Lester]. www.cpullc.com In 2001 (?), Aspen Technology acquired CPU's Plant Application Integration [process control] business. <> Company | Glossary