Digital Clocks | MCQs

    Q1: The chief component of modern digital clock/watch is _____?

    جدید ڈیجیٹل گھڑی/گھڑی کا مرکزی جزو _____ ہے؟
    • A. Lithium ion battery
    • B. Digital electronic circulatory
    • C. None of these
    • D. Oscillating crystal
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