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About the Author
Douglas Dwyer is the founder of Frequency Precision Ltd. in the UK. He provides consulting and design services to the world-wide electronics industry. Mr. Dwyer has been involved in frequency control since the mid-1960s and has published articles on crystal oscillators, temperature-compensated crystal oscillators, oven-controlled crystal oscillators, surface acoustic wave oscillators, and industrial quartz crystal fabrication technologies. The history of clocks and watches has been an interest of his since he got involved in the design of quartz watches.