Historical information

The HP-85A was Hewlett Packard's first Series 80 microcomputer, introduced about 1979. It had a keyboard, a dual alpha/graphics monochrome display, a bidrectional alphanumerics and graphics printer, and mass storage tape drive all integrated into a marvelously designed and compact case. It's operating system was seemlessly integrated with a powerful BASIC programming language that included intuitive graphics and input/output capabilities.

The HP-85A was also wonderfully expandable through four ports on the back of the case for adding plug in ROMS and modules.

Specifications

CRT DISPLAY

Size: 12.7 cm (5 in.) diagonal
Alphanumeric capacity: 16 lines x 32 characters
Graphics capacity: 192 x 256 dots
Scrolling capacity: 64 lines
Character set: 256 characters; set of 128 + same set underscored
Character font: 5 x 7 matrix
Intensity: adjustable
Cursor: underscore

BASIC LANGUAGE AND OPERATING SYSTEM

Standard ROM - 32K bytes
Maximum add-on ROM - 48K bytes
CRT memory RAM - 8K bytes

USER READ/ WRITE MEMORY

Standard - 16K bytes
Maximum - 32K bytes

TOTAL MEMORY

Standard - 56K bytes
Maximum - 120K bytes

(Information from http://www.ebbsoft.com/hp/85a.htm)

Physical description

Personal computer