HP series 80

HP series 80

The Hewlett-Packard series 80 of small scientific desktop computers was introduced in 1979, beginning with the popular model 85 targeted at engineering and control applications. They provided the capability of the HP 9800 series desktop computers into a smaller and less expensive form factor. Ultimately, the market for desktop computing would go to industry standard personal computers, such as the IBM PC which would be shortly after the 80 series.

Features

The HP-85's typewriter-style desktop case contained a 5" CRT screen, a tape drive (DC-100 cartridges, 210 kB capacity, 650 B/s transfer) and a thermal printer. It could be expanded through four module slots in the back that could hold memory modules, ROM extensions, or interfaces such as RS-232 and GPIB.

The machines were built around an HP-proprietary CPU running at 625 kHz (0.6 MHz, sic) and had a BASIC interpreter in ROM. Programs could be stored on DC-100 cartridge tapes or on disk/tape units connected through GPIB.

Despite the comparatively slow processor, the machines were quite advanced compared to other desktop computers of the time [e.g. Apple II (1977), Tandy TRS-80 (1977), CBM 4032 (1979), Zenith Z89 (1980)] . The standard number format was a 12-digit (decimal) mantissa with exponents up to ±499, and the interpreter supported a full set of scientific functions at this accuracy.

They also included graphics functions (on screen and hard copy) in the standard model and could easily be expanded in hardware and software - for example, matrix operations could be added to the BASIC interpreter through option ROMs. For the larger HP-86 and HP-87 series, HP also offered a plug-in CP/M processor card.

Models

Interfaces

External links


* [http://www.series80.org/ series80.org]
*http://www.hpmuseum.org/hp85.htm
*http://hpmuseum.net/exhibit.php?class=1&cat=9
*http://www.vintagecomputers.freeserve.co.uk/hp85/
* [http://www.hp.com/hpinfo/abouthp/histnfacts/museum/personalsystems/0029/0029sixviews.html HP-85 pictures from all sides]
* [http://www.voidware.com/calcs/hp85rep.htm Repairing the HP-85 tape drive]
* [http://213.73.93.228/cms/index.php?id=55&L=1 Series 80 Listings and Files hosted at AKSO]
* [http://www.computercollector.com/archive/ HP Series 80 Configuration Guide hosted at www.computercollector.com]

Notes


Wikimedia Foundation. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • SÉRIES TRIGONOMÉTRIQUES — Les séries trigonométriques se sont introduites au XVIIIe et au début du XIXe siècle, en liaison avec certains problèmes de physique (mouvement des cordes vibrantes, propagation de la chaleur). Elles sont d’un usage courant en astronomie, en… …   Encyclopédie Universelle

  • SÉRIES ET PRODUITS INFINIS — La notion de limite d’une suite est à la base de l’analyse. Le langage des séries, équivalent à celui des suites, s’est imposé dès le XVIIe siècle à propos du développement des fonctions en série entière. Cependant, les fondements rigoureux de la …   Encyclopédie Universelle

  • Series 40 — based Nokia 6300 Series 40 is a software platform and application user interface (UI) software on Nokia s broad range of mid tier feature phones, as well as on the Vertu line of luxury phones. It is the world s most widely used mobile phone… …   Wikipedia

  • Séries de divisions de la Ligue nationale — de baseball Les cérémonies d avant match de la troisième partie d une des Séries de divisions 2008 à Los Angeles, entre les Dodgers et les Cubs. Les Séries de divisions de la Ligue nationale de baseball sont disputées annuellement en octobre dans …   Wikipédia en Français

  • Séries de divisions de la Ligue américaine — de baseball Vladimir Guerrero, des Angels, au bâton contre les Red Sox pendant les Séries de divisions 2008 au Fenway Park de Boston. Les Séries de divisions de la Ligue na …   Wikipédia en Français

  • Series of 1928 (United States Currency) — Series 1928 was the first issue of small size currency printed and released by the U.S. government. These notes were the first standardized notes in terms of design and characteristics, featuring similar portraits and other facets. These notes… …   Wikipedia

  • Series — may refer to:Mathematics and science* Series (botany), a taxonomic rank between genus and species * Series (mathematics), the sum of a sequence of terms * Series circuits, a kind of electrical network * Seriation (archaeology), a method of dating …   Wikipedia

  • Series+ — Séries+ Création 31 janvier 2000 Propriétaire Astral Media (50 %) Canwest Media (50 %) Slogan « La télé des émotions » Langue Français Pays d origine …   Wikipédia en Français

  • SÉRIES+ — Création 31 janvier 2000 Propriétaire Astral Media (50 %) Canwest Media (50 %) Slogan « La télé des émotions » Langue Français Pays d origine …   Wikipédia en Français

  • Séries + — Séries+ Création 31 janvier 2000 Propriétaire Astral Media (50 %) Canwest Media (50 %) Slogan « La télé des émotions » Langue Français Pays d origine …   Wikipédia en Français

  • Series Nacionales de Rugby a Siete — 2010 Fundación 2010 Temporada Inaugural 2010 No. de equipos 18 (Categoría mascu …   Wikipedia Español

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”