Sharp Electronics introduces three laptop computers. Sharp's high-end PC-5541 competes against Compaq's SLT-286 and is similarly configured. The unit features an 80C286, a 40Mbyte hard drive, a 1.44Mbyte 3.5-inch floppy drive, a black-on-white supertwist LCD, 640Kbytes of RAM expandable to 3.6Mbytes, 640-by-480-pixel resolution and VGA on the motherboard. The PC-5541 costs $5,595 compared to $5,999 for the Compaq SLT-286. The PC-4602 and PC-4641 compete against NEC's ProSpeed 286 and Toshiba's 1600. Both Sharp models feature a 10-MHz NEC V-40 microprocessor, 640Kbytes of RAM expandable to 1.6Mbytes, a 640-by-400 backlit supertwist LCD and a modem slot but no other internal expansion slots. The $2,195 4602 has two 720Kbyte 3.5-inch floppies and weighs 12.2 pounds with the battery, while the $3,595 4641 has one floppy plus a 40Mbyte hard disk and weighs 13.4 pounds.