數(shù)字電子時鐘設(shè)計論文

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摘要： 本次設(shè)計中的LED數(shù)碼管電子時鐘電路采用24小時制記時方式,本次設(shè)計采用AT89C51單片機(jī)的擴(kuò)展芯片和6個PNP三極管做驅(qū)動，由三塊LED數(shù)碼管構(gòu)成的顯示系統(tǒng)，與傳統(tǒng)的基于8/16位普通單片機(jī)的LED顯示系統(tǒng)相比較，本系統(tǒng)在不顯著地增加系統(tǒng)成本的情況下，可支持更多的LED數(shù)碼管穩(wěn)定顯示。設(shè)計采用AT98C51單片機(jī)，使用5V電源供電，并且在按鍵的作用下可以進(jìn)行調(diào)時，調(diào)分，復(fù)位功能。計時數(shù)據(jù)的更新在計算機(jī)C語言的驅(qū)動下每秒自動進(jìn)行一次，但不需程序干預(yù)其輸出狀態(tài)。

關(guān)鍵詞：AT89C51 數(shù)碼管 LED 時鐘


Abstract: The design of LED digital electronic control circuit with the 24-hour clock system in mind when they approach the design of the expansion AT89C51 single chip and chipset PNP transistor 6 so driven by the three LED digital display system consisting of control , And based on the traditional 8 / 16 of an ordinary single-chip LED display system compared to the present system does not significantly increase the cost of the system, can support more stable LED digital tube display. AT98C51 single chip design, the use of 5V power supply, and the key role can be carried out when the transfer, transfer points and reset functions. Time to update the data in the computer language C driven by a second automatic, but the procedures do not interfere with the state of the output..

Keyword: AT89C51 nixietube LED clock