摘要
數字鐘是采用數字電路來實現時，分，秒的數字顯示的計時裝置。廣泛用于家庭，車站, 碼頭，辦公室等公共場所,成為人們日常生活中的必需品。由于數字集成電路的發展和石英晶體振蕩器的廣泛應用,數字鐘的精度遠遠超過老式鐘表, 鐘表的數字化給人們的生產生活帶來了極大的方便。
畢業設計主要實現語音報時的多功能數字鐘。以凌陽SPCE061A單片機作為控制核心并利用其自帶的語音芯片實現任意時刻的語音報時。和普通單片機相比較，此方案不需要附加的語音芯片，因此結構簡單。利用SPCE061A的簡易開發板“61板”可以在線編程在線調試,可直接調用語音播放函數，可大大地簡化工作量，縮短開發時間。采用DS12887實現計時，利用其自帶的電池可保證掉電情況下仍可完成計時功能，可以對其方便地進行程序控制。
關鍵字： 數字鐘；單片機；語音合成；
ABSTRACT
Digital Clock is a time counting devices using digital circuits. It’s widely used in families, stations, docks, offices and other public places and has become a necessity in daily life. Due to the development of the digital integrated circuits and the application of quartz crystal oscillators, the precision of the digital clock has far exceeded the old ones. Digital clocks give the people's work and daily life a great convenience.
The design of a multi-function digital clock with voice time report is the main goal. The SPCE061A (a SCM from Sunplus corp.) is used as the core controller. It’s easy to realize arbitrary voice time report with its built-in speech chip. Compare With other general SCMs, this scheme does not need any additional speech Chips. So its structure is simpler. Using the "61 boards" (a simple SPCE061A Development Board), we can program and debug online. The predefined API functions can directly used to realize Speech Synthesis. So we can greatly simplify the developing progress save a lot of time. The DS12887 chip is provides the current time. It can keep working even the main power is off. It also can be controlled by programming.
Keywords：Digital Clock; SCM ; Speech Synthesis;
