On. Off. All by itself. Automatically switched light is convenient and saves energy in home entrances, drives, hallways, staircases and rooms that are used only briefly.

board has agreed to spend $212 million to get its Muni Metro light rail off floppy disks. The Muni Metro’s Automatic Train Control System (ATCS) has required 5¼-inch floppy disks since 1998 ...