说明：  在语音播控记事器的设计中，89C51单片机起到了很重要的作用，它广泛的应用于各个领域中。语音播控记事器在生活中占了重要的位置，具有很好的普及应用的前景。
(control in speech broadcast on the notebook design, 89C51 played a very important role, It is widely used in various fields. Voice Broadcasting notebook with the life occupy an important position and has good prospects for wider application.)