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Realizing Electronic Clock Using Single Chip Microcomputer

2013-09-22
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　The clock circuit plays a very important role in the computer system and is the basis for ensuring the normal operation of the system. In a single-chip microcomputer application system, the clock has two meanings: one is the reference oscillation timing signal to ensure the normal operation of the system, which is mainly composed of a crystal oscillator and peripheral circuits. The size of the crystal oscillator frequency determines the speed of the single-chip microcomputer system; the other is the standard timing clock of the system, that is, the timing time, which usually has two implementation methods: one is to use software, that is, to use the programmable timer/counter inside the single-chip microcomputer to achieve it; the other is to use a dedicated clock chip to achieve it. This article mainly introduces the method of using the timer/counter inside the single-chip microcomputer to achieve an electronic clock.

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