Ronda Quartz, ca. 1974

A Motorola chip controls the Watch
In this close-up you can see that a Motorola Time chip controls the beat of this quartz watch. Also interesting, the earlier Quartz movements look more like analog movements. The gear bridge is almost identical to a analog watch and you will not find this on more modern movements anymore. Another representative of this stage of quartz movement development is the Orient Quartz on my sales site. A watchmaking friend of mine calls these movements "early transitional quartz movements".
A little bit later, in the mid 80ies, the quartz movements looked like this, a Breitling Quartz from ca. 1984