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| 1 | 1975 | Introduction at the Basle Fair 1975 of the famous 'Heuer Chronosplit' (cal. 100) by Heuer-Leonidas of Bienne, Switzerland, with a LCD screen for normal time indication and a LED display below that for time measurement. The watch was equipped with a quartz crystal with a frequency of 32 kHz and an IC issued by Integrated Display Systems USA. It was the first entirely solid state digital wrist-chronograph ever made. Later Heuer-Leonidas marketed the 'Chronosplit LCD' (cal. 102) with two LC displays, the 'Chrono-split Manhattan GMT' (1977), 'Senator GMT' and the chronograph 'Carrera' with an analogue and a digital LC display, the chronograph 'LCD Kentucky' with one LC display and the high tech chronograph 'Ford' with two LC displays (cal. 103). |
| 2 | 1975 | In June, Seiko markets the world's first digital LCD chronograph, calibers 0634A and 0634B. It was a further development of the 0624A. |
| 3 | 1976 | Omega releases the Chronoquartz 1 'Albatros' (cal. 1611), a watch with a hybrid display: hands for the time indication and a LCD for the chronograph and one quartz crystal 32 kHz for both. The first watch in the world equipped with both hands and LCD. |
| 4 | 1977 | ESA 934.711 digital LCD chronograph. |
| 5 | 1978 | ESA 942.711 digital LCD chronograph. |
| 6 | 1979 | ESA 900.231, analogue and digital chronograph. |
| 7 | 1983 | Seiko premieres the first quartz chronograph with hands. Three models were delivered: cal. 7A28, 7A48 followed a year later by the 7A38. |
Copyright © by Pieter Doensen
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