手持点菜设备得一个嵌入式系统，相当于一个掌上电脑。它带有一个液晶屏和若干按键。用餐者可以根据液晶屏上显示的菜单进行触摸点菜或者按键点菜。点菜完毕后，通过无线通信将点菜信息发送到后台服务器上。-ordered handheld devices in an embedded system, which is equivalent to a palm computer. It carries an LCD screen and a number of keys. Diner LCD screen can be displayed on the menu for touch buttons orders or orders. After orders through wireless communications will be ordered background information sent to the server.