检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:Lixue Zou Yajie Liu Lei Su
机构地区:[1]Communication and Information Engineering, Changshu University, Jiangsu, China
出 处:《Current Electronics and Telecommunications》2019年第1期8-13,共6页当前的电子和电信
摘 要:At the end of the 20th century, the rapid development of electronic technology in its promotion had effectively promoted the development of social productive forces and social information to improve the degree. People of modern life pay more attention to the concept of time as compared to before. It can be said that time and money to draw the equal sign. For those who are very strict and accurate to grasp the time or things, the time is not accurate will bring a lot of trouble so the digital tube for the display clock than the pointer clock showed a great advantage. Digital display time is simple and clear while the time accurate display to seconds. Whilst we mechanically dependent on the crystal oscillator, it may sometimes lead to errors. Digital clock is the use of digital circuits to achieve 'time','minutes','seconds' digital display of the time device. Digital clock accuracy, stability far more than the old mechanical clock. In this design, we use LED digital tube display, minutes, seconds and 24-hour chronograph according to the digital tube dynamic display principle to display with 12MHz crystal oscillator oscillation pulse, timer count. In this design, the circuit has the display time of its function and can achieve the adjustment of time. Digital clock is its small, low price, travel time, high precision, easy to use, more features, easy to integrate and the majority of consumer favorite to get a wide range of use.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:18.222.209.172