资 源 简 介
本题必须采用广州周立功单片机发展有限公司赞助的ARM2138实验开发仪为主机板;并扩展显示器、键盘、打印机等相应接口;超市的物品使用13位数字编码(每件物品均有相对应的条形码)。
(1) 简易超市收银机具有可设置100个商品价目表(PLU),并具有掉电保护。商品的数字编号、品名(数字或英文字母)、单价等信息可输入;具有200条销售日志。
(2) 扩展键盘实现数字和英文字符输入;
(3) 扩展打印机打印商品销售记录(包括售货日期、时间、商品名称、单价、合计等);
(4) 显示器上可通过键盘切换显示环境的温度,并可进行温度超限报警;(温度误差:<±0.5℃)。-The title must be single-chip Li-Gong Zhou Guangzhou Development Co., Ltd.-sponsored experiment ARM2138 development instrument for the motherboard and expand the display, keyboard, printer, etc. The corresponding interface supermarket items use 13-digit code (each item has the corresponding bar code).
(1) Simple supermarket cash register 100 can be set with a price list of goods (PLU), and has brown-out protection. Number of digital goods, name (number or letters of the alphabet), unit prices and other information can be input with 200 sales log.
(2) the expansion of digital and English keyboard input characters
(3) the expansion of printer sales records (including the sales date, time