Apple Computer Inc on Wednesday launches its first full-function servers, and with them hopes to persuade small- and medium-size businesses to buy from it all the computer equipment they need; the new Workgroup servers can process data up to four times faster than Quadras, and although they will support alien machines, they are designed primarily for networks consisting mainly of Macintoshes; the Workgroup Server Models 60 and 80 cost from $3,080 to $10,000, the high-end Model 95 at $7,600 to $13,000; the 95 is out by the end of April the other two this summer; the company also has a new Release 4.0 of its AppleShare file and print sharing software, and a high-end AppleShare Pro; the company is also launching AppleTalk Connection for MS-DOS and Windows to enable cross communications between Macintosh and MS-DOS boxes in a network.