Electronic clock based on single-chip microcomputer

Abstract

The invention discloses an electronic clock based on a single-chip microcomputer. The electronic clock utilizes the stc89c52 single-chip microcomputer as a main control module circuit. A single-chip microcomputer minimum system mainly comprises a reset portion, a clock portion and a power supply portion. The clock portion is realized mainly by utilizing a Nixie tube. The clock portion also comprises a temperature detection portion which adopts a DS18B20 temperature sensor and is connected with the single-chip microcomputer through a three-wire system; the reset portion carries out control through keys; and the power supply portion utilizes a battery to supply power and can realize stable voltage output through a 5-volt voltage-stabilization chip, and a diode is also added. The electronic clock is also added with a serial port communication mechanism; the hardware utilizes a max202 chip as the main chip; the serial port 0 of the single-chip microcomputer is utilized to realize multi-machine synchronous timing; the electronic clock in the invention not only can show time accurately, but also can be set by adjusting time through the independent keys; and the electronic clock has the alarm clock setting and the time reset functions.

Description

technical field [0001] The invention relates to an electronic timer, in particular to an electronic clock based on a single-chip microcomputer. Background technique [0002] Time is an indispensable and important element in people's life. From the ancient hourglass, the twelve celestial branches, to the later mechanical clocks and contemporary quartz clocks, the importance of time has been fully demonstrated. However, with the continuous development of science and technology, the continuous popularization of mechanical automation and intelligence, people's requirements for clocks and watches are getting higher and higher, and the accuracy of clocks and watches is getting stronger and stronger; ordinary clocks and watches can no longer meet the needs of contemporary people. , so the electronic clock came into being. It not only has the functions of ordinary mechanical clocks, but also has the advantages of high performance, low cost, high precision, etc., which brings great ...

AI Technical Summary

Problems solved by technology

However, with the continuous development of science and technology, the continuous popularization of mechanical automation and intelligence, people's requirements for clocks and watches are getting higher and higher, and the accuracy of clocks and watches is getting stronger and stronger; ordinary clocks and watches can no longer meet the needs of contemporary people. , so the electronic clock came into being

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