	circuit systems csyi buys board maker circuit systems inc said it has bought all of the stock of ionic industries inc in exchange for shares of its common following the exchange there will be shares of circuit systems stock outstanding ionic holders will own about pct of the outstanding stock of circuit systems it said ionic a maker of circuit boards had revenues of mln dlrs and pretax profits of dlrs in up from revenues of mln and pretax profits of dlrs in circuit systems said reuter 
