9 MICROCOMPUTER SYSTEMS; MICROCOMPUTER PERIPHERAL DEVICES-NAMELY, FLOPPY DISK DRIVES AND CONTROLLERS, TERMINALS AND PRINTERS; MICROCOMPUTER BOARDS-NAMELY, PRINTER CIRCUIT BOARDS; MICROCOMPUTER COMPONENTS-NAMELY, MICROCOMPUTER CENTRAL PROCESSOR UNITS AND CENTRAL PROCESSOR UNIT PERIPHERAL UNITS; AND MICROCOMPUTER SOFTWARE-NAMELY, PRE-RECORDED PROGRAMS