Describes floppy disk information storage systems and discusses capabilities and advantages of floppy disks for microcomputer users. The functions of disk operating systems (DOS) are reviewed and the effect of DOS formats on the choice of an appropriate disk drive system is outlined. (JL)

This hardware review describes such innovative features of the Texas Instrument Portable Professional Computer as integrated color screen and option slots permitting customization as well as the physical unit (inside and out), its mass storage flexibility, and sturdiness. A comparison with the IBM PC Portable is included. (MBR)

Focusing primarily on hard disks, this report describes the choices currently available; explains the inner workings of hard-disk technology; lists 70 leading hard-disk products with their costs and capabilities; describes a new type of high-capacity drive; and compares speed, cost, and reliability of a number of widely used hard-disk backup…