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)

Describes and evaluates the hardware, software, peripheral devices, performance capabilities, and programing capacity of the Sinclair ZX Spectrum microcomputer. The computer's display system, its version of the BASIC programing language, its graphics capabilities, and the unique features of its data entry keyboard are discussed. (JL)

Describes systems which use wireless terminals to communicate with mainframe computers or minicomputers via radio band, discusses their limitations, and gives examples of networks using such systems. The use of communications satellites to increase their range and the possibility of using light beams to transmit data are also discussed. (MBR)