Sun Microsystems Inc has joined the First Division of computer manufacturers with that heartfelt but two-edged accolade – the attention of third party add-on alternatives to the memory and peripherals it offers for its machines: Data Design Techniques Ltd has signed to bring to the UK the single board memories for Sun workstations made by Parity Inc of Sunnyvale, California; the memories have VMEbus interfaces on three edge connectors and the boards go up to 24Mb for Sun-3 and 6Mb for Sun-2 stations; boards with combined memory and SCSI disk interface control are also offered; no prices were given.