Multifunctional digital clock

A digital clock and multi-functional technology, applied in the field of digital clocks, can solve the problem of fewer single-chip microcomputers, and achieve the effect of simplifying the circuit

Inactive Publication Date: 2014-09-03
熊浩仁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, with the rapid development of electronic technology, single-chip microcomputer technology has been widely used, but in terms of digital clocks, various functions are mainly completed by analog circuits or digital circuits, and few single-chip microcomputers are used.

Method used

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Experimental program
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Embodiment

[0022] The multi-functional digital clock uses the single-chip microcomputer chip STC89C52 as the core controller, and is mainly composed of the following modules:

[0023] 1. Main control module; the main control module is also the smallest system of single-chip microcomputer. STC89C52 single-chip microcomputer is selected. The single-chip microcomputer has 4 input and output ports, and its pins belong to the PDI40 port of dual in-line package; they are PORT0, PROT1, PROT2, PROT3, among them, P0 port is a group of 8-bit open-drain bidirectional I / O ports, and the other three have 30K resistors inside, so no external resistors are needed. The microcontroller has 6 interrupts, which are One serial interrupt, two external interrupts, three timer interrupts;

[0024] The stopwatch function is to use the timer / counter of the single-chip microcomputer to load the initial value, interrupt once every 1 / 100s, and add one to the stopwatch count. When the count reaches 100, it is one se...

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Abstract

The invention discloses a multifunctional digital clock. The multifunctional digital clock is mainly characterized in that a single chip STC89C52 is taken as a core controller and is mainly comprises a main control module, a clock module, a reset module, a power module, a key module, an LCD (Liquid Crystal Display) module, a buzzer module; the multifunctional digital clock is capable of accurately displaying time reaching second, and also capable of adjusting time and setting alarms anytime; an interrupt program is implemented at the expiry of a timer; the digitals displayed by the LCD are refreshed according to a system; when the set alarm time is the same as the current displayed time, the buzzer and the LED lamp start working and play the role of prompting time. The multifunctional digital clock has the advantages that the traditional design concept and design method are fundamentally changed, and not only is a circuit simplified, but also soft programs or parameters can be changed to complete different designs.

Description

technical field [0001] The invention relates to an electronic timer, in particular to a digital clock controlled by a single-chip microcomputer. Background technique [0002] The digital clock is a timing device that uses digital circuits to complete the timing of hours, minutes, seconds, and digital display. It is widely used in public places such as personal homes, stations, docks, and offices, and provides a lot of benefits for people's study, work, life, and entertainment. Great convenience has become an indispensable necessity in people's daily life. [0003] In recent years, with the rapid development of electronic technology, single-chip microcomputer technology has been widely used, but in terms of digital clocks, various functions are mainly completed by analog circuits or digital circuits, and few single-chip microcomputers are used. Contents of the invention [0004] The purpose of the present invention is to provide a multifunctional digital clock based on sin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04G19/00G04G21/00
Inventor 熊浩仁
Owner 熊浩仁
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