Zenith Data Systems introduced the SupersPort SX portable computer in 1989. It featured 16 MHz 80386SX processor, 40 hard drive, 1.44 floppy drive, 1 RAM, 10-inch monochrome VGA LCD screen, MS-DOS 3.3. Weight is about 17 pounds; price is about US$6000. This was a battery-powered portable microcomputers designed to satisfy …