Renseignements généraux

Nº de série

1818

Nº de partie

2

Nombre total de parties

2

Ou

S/O

Brevets

S/O

Description générale

PLASTIC CASING & KEYS/ METAL & SYNTHETIC WORKING PARTS

Dimensions

Remarque : Cette information reflète la taille générale pour l’entreposage et ne représente pas nécessairement les véritables dimensions de l’objet.

Longueur

14,5 cm

Largeur

8,0 cm

Hauteur

3,5 cm

Épaisseur

S/O

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Technologie informatique

Catégorie

Périphériques numériques

Sous-catégorie

S/O

Fabricant

Ou

Norpak

Pays

Canada

État/province

Ontario

Ville

Kanata

Contexte

Pays

Canada

État/province

Ontario

Période

1981-1985

Canada

This was part of a Canadian developed videotex technology. The Telidon program began on August 15, 1978 and ended on March 31, 1985.

Fonction

Input device for a Norpak mark 2 decoder, second generation videotex decoder used to decode Telidon graphics images.

Technique

According to Douglas O'Brien, system engineer on the Telidon project, keyboards were usually used for business, office or laboratory environments as keypads were meant for Telidon home systems. This keypad was manufactured from a repurposed calculator. Plastic injection molding was very expensive, so it was cheaper to purchase and modify an existing calculator with a new circuit board. This was especially the case when equipment was manufactured for a field trial, which only used a certain amount of equipment. In 1983, the North American Presentation Level Protocol Syntax (NAPLPS) graphics language develop from the Canadian Telidon system was formalized, ratified and adopted as a world standard for graphics transmission by computer.

Notes sur la région

Inconnu

Détails

Marques

WHITE LETTERING READING 'norpak' & 'Telidon' ON FRONT, WITH SYMBOLS & DIGITS, & ON BACK 'norpak', 'COMPUTER DISPLAY PRODUCTS' & 'Model No. KP2 03050/ Serial No. 1818/ Made in Canada'

Manque

S/O

Fini

BLACK CASING & KEYS, GREY POWER CORD

Décoration

S/O