Renseignements généraux

Nº de série

S/O

Nº de partie

1

Nombre total de parties

3

Ou

S/O

Brevets

S/O

Description générale

SUBSTRATE OF UNKNOWN SUBSTANCE (SYNTHETIC?) IN SYNTHETIC MOUNT/ METALLIC CIRCUITRY

Dimensions

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

Longueur

S/O

Largeur

3,2 cm

Hauteur

S/O

Épaisseur

S/O

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Horlogerie

Catégorie

Montres

Sous-catégorie

S/O

Fabricant

Ou

Bowmar

Pays

Canada

État/province

Ontario

Ville

Ottawa

Contexte

Pays

Canada

État/province

Ontario

Période

1970'S

Canada

COMPONENT USED IN DEVELOPMENT OF CANADIAN MADE LED DIGITAL WATCH. BOWMAR WAS PIONEER IN LED CLOCKS, CALCULATORS ETC. & TURNED IN 1973 TO DESIGN & PRODUCTION OF LED WATCHES, PRODUCING THEM FOR 10-12 YEARS. DONOR WAS COMPANYCO-OWNER & PRESIDENT & DESIGNED CHIP CIRCUITRY, WHICH WAS THEN FABRICATED IN U.S.

Fonction

SUPPORTING MATERIAL UPON WHICH ELECTRONIC CIRCUITS OF DIGITAL WATCH ARE FABRICATED. MOUNTED ON EACH OF THESE EXAMPLES IS CMOS [COMPLEMENTARY METAL OXIDE SEMICONDUCTOR] INTEGRATED CIRCUIT.

Technique

EXAMPLE OF COMPONENT USED IN DEVELOPMENT OF EARLY LED DIGITAL WATCH. IN 1970 AMERICAN FIRM HAMILTON WATCH APPLIED QUARTZ CRYSTAL TIMING PRINCIPLE TO WATCHES, PRODUCING PULSAR WATCH, WHICH SOLD FOR $2500. SEVERAL YEARS LATER BOWMAR WATCH WAS SOLD FOR $250.

Notes sur la région

Inconnu

Détails

Marques

GOLD "B" ON TOP; BLACK "Bowmar" ON UNDERSIDE

Manque

APPEAR COMPLETE

Fini

GREEN & GOLD SUBSTRATE IN BLACK MOUNT

Décoration

S/O