Compiled by David Olmos and Kimberly Jackson, Times staff writers

Products of two county computer firms were named best in their categories in a recent trade magazine survey.

AST Research Inc. of Irvine was honored twice in the annual InfoWorld Magazine personal computer buyer poll, which asked readers to pick from a list of nominees “superior achievers” in 36 product categories.

AST’s Rampage Plus 286, an add-on memory board that allows a personal computer user to use several software programs simultaneously, was chosen best product in the memory/multifunction category. Named best network hardware was AST’s Premium Workstation 286, a high-performance personal computer.

Versacad Corp. of Huntington Beach, a unit of Prime Computer Inc., based in Natick, Mass., received top honors for computer-aided design software for Apple Computer’s Macintosh.