指机械的、电子的或化学器件，用于区分、记录或指示环境中某一变量的变化，如温度、压力、电荷、电磁辐射、核辐射、粒子或分子等。如紫外检测器是将通过待测物质后的光强变化转化为电信号的器件，这类信号转换器英文中又称为transducer。 -Refers to mechanical, electronic or chemical devices used to distinguish records in a particular environment or direction of change

是基于at89s51 5461bg uln2803等器件实现四位数字电子钟 如需要电路图可以发邮件到我邮箱 woyunlu@163.com -Is based on the at89s51 5461bg uln2803 and other devices to achieve four-digit electronic clock if necessary circuit can send an email to my mailbox woyunlu@163.com

数码管是应用最为广泛的电子器件，其扫描程序也是要我们认真去学习-Digital control is the most widely used electronic devices, which scan the program also wants us to learn seriously