HP-85A - Introduction

The desktop calculator / computer HP-85A was introduced in January 1980.
It contains by

  • HP customized CPU
  • keyboard
  • 16 kB dynamic RAM (expandable to 32 kB with external 16 kB module)
  • 5" black-white CRT (16 lines of 32 characters, or 256192 pixels)
  • tape drive for DC-100 cartridges (210 kB capacity, 650 B/s transfer)
  • thermal printer
  • .

    The CRT and printer display graphics in addition to text.The printer has print screen function, it can copy anything shown on the screen. On the rear of the HP-85A are four slots for expansion modules for RAM or ROM extensions, or interfaces such as RS-232 and GPIB.