该文详细比较了Linux, Android和OMS的区别，是一部比较详细介绍这几个概念的入门级指导ppt。-In this paper, a detailed comparison of Linux, Android and the difference between OMS, is a more detailed concept of these entry-level guide ppt.

android系统概述、系统开发综述、电话部分和连接wifi 蓝牙部分的ppt，非常好。-android system overview, system development review, telephone parts and parts of the Bluetooth connection wifi ppt, very good.

this an power point presentation in which we have discussed the development of an android applicaton for billing the ammount .-this is an power point presentation in which we have discussed the development of an android applicaton for billing the amm