索智的cs9800芯片数据手册，保密的东西，外面下载不到的-Cable wise cs9800 chip data sheet, confidential things, not the outside download

按键输入数字，12864液晶显示，可实现任意次的加减运算，具有逐位清除功能和整体清除功能-Keys to enter numbers, 12,864 LCD display, enabling any number of addition and subtraction, with a bit-wise and overall clearance clearance