30 Jan 2016, 04:15
I'm interested in history of first digital watches in USSR.
It is well known, that first attempts to make display watch in USSR were at 1973. A year later there were two prototypes - LCD and LED. LCD based on not perspective DSM technology. As to LED version - it is some sort of success. For LCD version the time left - constructors had to change technology for more modern twist effect display, as to LED version - they changed principles of visualisation - from digits of small sqare dots to digits of bars.
Here it is - the first known proto LED watch from the USSR. No info about date of production of this watch. Only well known, that serial watches started in 1975th. According to legend these proto watches were produced for manufactory workers - to test new technology on the wrist.
The pic with activated time visualisation
The quartz brick has its own number (first ones for the first watches marked by serial num, later with the date of production (month and year).
Here the quartz had been replaced during tests or later.
Push buttons are with magnets. As to contacts - there are GERCONES (germetic contact made of glass tube with contacts, placed in the vacuum). There's a row of 5 contacts according to 5 push buttons.
Module of the first LED watch in the USSR.
The plate of the same proto watch, but in ruined condition
Push button with square magnet - to activare gercon. there's no holes in the case for push buttons - it is water proof.
The battery contact on the case back had been welded manually.
Just compare two technologies, there are a few same features to make conclusions, that these watches were made by one group of designers
It is well known, that first attempts to make display watch in USSR were at 1973. A year later there were two prototypes - LCD and LED. LCD based on not perspective DSM technology. As to LED version - it is some sort of success. For LCD version the time left - constructors had to change technology for more modern twist effect display, as to LED version - they changed principles of visualisation - from digits of small sqare dots to digits of bars.
Here it is - the first known proto LED watch from the USSR. No info about date of production of this watch. Only well known, that serial watches started in 1975th. According to legend these proto watches were produced for manufactory workers - to test new technology on the wrist.
The pic with activated time visualisation
The quartz brick has its own number (first ones for the first watches marked by serial num, later with the date of production (month and year).
Here the quartz had been replaced during tests or later.
Push buttons are with magnets. As to contacts - there are GERCONES (germetic contact made of glass tube with contacts, placed in the vacuum). There's a row of 5 contacts according to 5 push buttons.
Module of the first LED watch in the USSR.
The plate of the same proto watch, but in ruined condition
Push button with square magnet - to activare gercon. there's no holes in the case for push buttons - it is water proof.
The battery contact on the case back had been welded manually.
Just compare two technologies, there are a few same features to make conclusions, that these watches were made by one group of designers
The proof of the pudding is in the eating...
