Tags: Information Appliance.
The HP-75C and HP-75D were hand-held computers programmable in BASIC made by Hewlett-Packard from 1982 to 1986.The HP-75 had a single-line liquid crystal display 48 KiB system ROM and 16 KiB RAM a comparatively large keyboard (albeit without separate numeric pad) a manually operated magnetic card reader (2×650 bytes per card) 4 ports for memory expansion (1 for RAM and 3 for ROM modules) and an HP-IL interface that could be used to connect printers storage and electronic test equipment.
