Hewlett-Packard’s widely-anticipated enhanced laptop, the Vectra CS (CI No 754), was duly launched on Monday and, as expected, the 17 lbs 10 oz machine comes standard with a 12 liquid-crystal display, a full-size detachable keyboard, and 640Kb RAM. The laptop uses a CMOS 8086-compatible chip believed to be the NEC V30, and includes 8087 socket.The Vectra CS comes with two 3.5 1.44Mb floppies for $2,495, or with one and a 20Mb hard disk at $3,595. Up to 6Mb of EMS RAM can be added to the basic Vectra CS, while 4Mb can be put into the Model 20. The floppy-based Vectra CS will run for up to 10 hours on a single battery charge; a fuel gauge alerts the user when a recharge is necessary.