NEW YORK (AP) -- Shares of some top computer companies were mixed at the close of trading: Apple Inc rose $.66 or .3 percent, to $225.50. Dell Inc fell $.10 or .7 percent, to $14.21. Hewlett Packard rose $.24 or .5 percent, to $52.02. IBM rose $1.98 or 1.6 percent, to $127.60. Lexmark fell $.17 or .5 percent, to $35.85.