摘要
采用AT89C52单片机为主控芯片,结合压力传感器、模数转换器、液晶显示器实现一种高精度多功能数字电子秤。用4×4矩阵键盘进行控制,操作便捷。用LCD显示称重重量、单价、总价等信息。用热敏票据打印机打印出相关信息。该电子秤具有称重、键盘输入、自动计价、信息显示和票据打印的功能。具有体积小、成本低、精确度高、可靠性高等特点。
Adopts AT89C52 microcontroller as the main control chip, combines pressure sensor, analog- to-digital converter, and liquid crystal display （LCD） to make up a high-accuracy and multi- functional digital electronic scale. 4x4 matrix keyboard makes operation convenient. LCD is used to display weighing weight, unit price, total price and other information. Thermal receipt printer prints out the rated information. The electronic balance has functions of weighing, key- board input, automatic measurement, information display and bill printing. The design has such characteristics as small-size, low-cost, high-accuracy and high-reliability.
