NASA NTRS · 19810000122
Electronically Calibratable Clock
Abstract
Calibration circuit corrects apparent clock rate (ACR) of digital clock without altering oscillator frequency. Calibration circuit does not require iterative adjustments to reference frequency or rate, and correction to ACR is controlled by pushbuttons. Technique is applicable to any timer or counter that counts up to predetermined number then outputs a pulse to a readout register or to control another device.
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Davidson, J. R., Heyman, J. S.. 1982-11-01. Electronically Calibratable Clock. https://ntrs.nasa.gov/citations/19810000122
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