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 numbe

PDA点菜系统设计方案，比较详细地介绍了系统的各个组成部分，有一定的参考价值-PDA la carte system design, a more detailed presentation of the system components, a certain reference value

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 numbe