History of Seiko (No. 18)

[ Front page ]   [ New | Page list | Search | Recent changes | Help | | Log in ]

• History
• View the diff.
• View the diff current.
• View the source.
• Go to Seiko.
  • 1 (2023-08-12 (Sat) 21:28:02)
  • 2 (2023-08-12 (Sat) 22:33:23)
  • 3 (2023-11-13 (Mon) 23:27:18)
  • 4 (2023-11-18 (Sat) 16:09:23)
  • 5 (2023-12-10 (Sun) 23:36:48)
  • 6 (2023-12-11 (Mon) 09:54:15)
  • 7 (2023-12-19 (Tue) 23:29:30)
  • 8 (2023-12-20 (Wed) 23:23:28)
  • 9 (2023-12-21 (Thu) 23:07:47)
  • 10 (2024-01-01 (Mon) 12:43:31)
  • 11 (2024-01-03 (Wed) 23:23:17)
  • 12 (2024-01-04 (Thu) 23:37:43)
  • 13 (2024-01-07 (Sun) 13:57:42)
  • 14 (2024-01-07 (Sun) 16:56:42)
  • 15 (2024-01-09 (Tue) 08:55:14)
  • 16 (2024-02-24 (Sat) 22:49:45)
  • 17 (2024-02-25 (Sun) 12:48:40)
  • 18 (2024-03-03 (Sun) 15:32:39)
  • 19 (2024-08-14 (Wed) 20:53:50)
  • 20 (2024-08-19 (Mon) 11:05:16)
  • 21 (2024-08-21 (Wed) 12:02:56)
  • 22 (2024-10-27 (Sun) 15:50:38)
  • 23 (2024-11-16 (Sat) 23:15:23)
  • 24 (2024-11-18 (Mon) 16:38:16)
  • 25 (2024-11-20 (Wed) 23:39:03)
  • 26 (2024-11-22 (Fri) 23:13:27)
  • 27 (2024-11-23 (Sat) 13:55:39)
  • 28 (2024-11-24 (Sun) 12:49:03)
  • 29 (2024-11-25 (Mon) 16:43:27)
  • 30 (2024-11-25 (Mon) 23:31:40)
  • 31 (2024-11-28 (Thu) 23:30:47)
  • 32 (2024-11-29 (Fri) 13:01:42)
  • 33 (2024-11-29 (Fri) 23:55:03)
  • 34 (2024-11-30 (Sat) 16:17:01)
  • 35 (2024-12-01 (Sun) 18:46:25)
  • 36 (2024-12-01 (Sun) 19:22:05)
  • 37 (2024-12-02 (Mon) 12:55:36)
  • 38 (2024-12-02 (Mon) 17:20:03)
  • 39 (2024-12-14 (Sat) 09:30:03)
  • 40 (2024-12-14 (Sat) 13:25:08)
  • 41 (2024-12-14 (Sat) 23:01:09)
  • 42 (2024-12-15 (Sun) 23:52:25)
  • 43 (2024-12-16 (Mon) 17:08:48)
  • 44 (2024-12-19 (Thu) 22:43:27)
  • 45 (2024-12-25 (Wed) 15:01:32)
  • 46 (2024-12-26 (Thu) 23:05:46)
  • 47 (2024-12-30 (Mon) 23:52:09)
  • 48 (2025-01-01 (Wed) 15:06:09)
  • 49 (2025-01-01 (Wed) 18:44:39)
  • 50 (2025-01-08 (Wed) 23:14:15)
  • 51 (2025-01-27 (Mon) 14:02:30)
  • 52 (2025-02-01 (Sat) 23:24:59)
  • 53 (2025-02-02 (Sun) 12:45:47)
  • 54 (2025-02-02 (Sun) 18:50:37)
  • 55 (2025-02-02 (Sun) 19:40:21)
  • 56 (2025-02-03 (Mon) 13:44:52)
  • 57 (2025-02-03 (Mon) 17:01:06)
  • 58 (2025-02-17 (Mon) 23:56:14)
  • 59 (2025-03-10 (Mon) 13:03:48)
  • 60 (2025-03-16 (Sun) 16:07:45)

---

First quartz watch: Astron released 25 Dec 1969 calibre 35 with hand soldered hybrid integrated circuit featuring 76 transistors and 84 resistors 29 capacitors total 189 elements onto a ceramic substrate.

First true production quartz watch calibre 3800 series 1971 with in house CMOS IC. Prototype finished April 1971, first watches shipped Nov 1971, 3823 released Dec 1971.

Earliest watch I've seen dated May 1971, latest 1978 (both 3823)

Regarding John Hall. At Intersil, Hoerni, a Swiss native, received venture funding from Swiss watchmaker Omega to develop a wristwatch IC. Though Hoerni and Hall created a successful design, Omega decided not to put it into production. Hoerni went to Japan and received an order for the watch chips from Seiko Chairman Shoji Hattori. Seiko used these chips to create the world's first quartz watch, the “Astron”, in 1969. Hattori, recognizing the potential of this design and future ones, funded Hall's start-up company, Micro Power Systems (MPS), in 1971.

38 Series Stainless Steel†

Eight models

3800†

One model two dials

3802 38QTC†

Nine models

3803 38QTW†

3819†

GMT, 2 models

3823 38SQW†

VFA 6+ models

3862†

3863†

3883†

Superior One model

39 series†

3922†

3923†

     

Site admin: Riquartz -

PukiWiki 1.5.4 © 2001-2022 PukiWiki Development Team. Powered by PHP 8.3.24. HTML convert time: 0.015 sec.