Question Bank (1 mark) · Q6
Q.What is the need of clock circuit?
Karnataka PUCTextbookShort· 1mImportance★★★★★est
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The clock circuit supplies the timing pulses that drive and synchronise every operation of the microcontroller.
Instruction fetching, decoding and execution all take place in fixed time slots defined by the clock. A crystal (commonly connected across the 8051's XTAL1 and XTAL2 pins) or an RC network sets the frequency, and each machine cycle is a fixed number of clock periods. So the clock circuit is essential for the chi …
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