无显示屏多功能计算器设计研究

Study of no screen multi-function calculator design

系统采用盛群公司的HT46F49E单片机为主控单元,使用矩阵式键盘和LED阵列作为输入输出设备,应用单片机将输入值或内部值进行运算后把结果输出到对应键盘上的LED灯显示,并以语音的形式读出相应的数字.系统可进行常用的四则运算和查看并以语音读出日历、时间、星期.具有结构新颖、电路简单等优点,避免了传统的显示屏显示参数的弊端,特别适合盲人、老人使用.

The system uses the HT46F49E single chip microcomputer of Hohek company as control unit, using the keyboard matrix and LED array as input and output devices, which introduces a way that uses single -chip input values or internal value after operation to carry out the results and output the corresponding LED on the keyboard light show, and transforms a voice form into corresponding digital. The system can be used for four operations and viewing and enrolling in calendar, time, week. It has the advantages of novel structure, novel, simple structure, avoiding LED display screen defects of traditional display parameter especially suitable for the blind, elderly people.