It seems that the latest thing that all self-respecting X-terminal manufacturers would rather be dead than be seen without is one or two models that support dual displays. King of Prussia, Pennsylvania-based Human Designed Systems Inc has unveiled a new line of X Window terminals that support two monitors simultaneously. The ViewStation Dual Series is aimed at commercial markets such as financial trading, emergency dispatch and process control, where users need to view or interact with more data than can fit on a single screen. Each terminal has two monitors that are controlled by a single X terminal base, keyboard and mouse. Windows can be moved from one monitor to another by simply dragging them with a mouse. The ViewStations are based on Intel Corp 80960 RISC chips, come with 4Mb of RAM, local hard disk storage of up to 100Mb, and have two PCMCIA ports. The family comprises a Dual Base model, which doesn’t include monitors and costs $2,300; a Dual 14C with 14 colour screens for $2,800; a Dual 15C with 15 colour monitors for $3,000; a Dual 17C with 17 colour screens for $4,000; and a Dual 19C with 19 colour monitors for $5,400. The products are available now. And Tektronix Inc has added a dual display X terminal system, called the XP100D. This comes as a single processing unit – $4,700, with two 17 colour screens, $2,850, or two 19 colour screens, $4,250.