J2ee , which is presented and established by sun microsystem company , is the specification of a computing platform for distributed components based on java technology . based on this platform , an application system with multiple tiered structure can be developed and deployed rapidly J2ee是sun公司提出和制定的基于java技术的分布式组件计算平台规范,基于这个平台可以实现快速开发和部署多层结构的易于移植的应用系统。
To change this situation , companies face tow choices : one is to establish a entirely new and large system replacing those old systems ; the other is eai ( enterprise application integration ) . considering the cost cycle and the possible difficulties during the process , the latter is obviously relatively feasible nowadays , as main means of enterprise integration : one is microsoft ' s com + system and windows dna platform ; the other is microsystem ' s ejb standard and j2ee platform 企业要解决这些矛盾,一种方法是对现有系统推倒重来,彻底重新开发一个覆盖到企业各个部门的统一的新系统,考虑到成本、实施周期和难度等因素,这不是一种切实可行的解决方案。另一种方法是企业从整体上规划企业各个信息系统,根据实际需要,对各个应用系统进行总体规划,选择一个合适的集成平台,把企业的各个“信息孤岛”有机的集成起来。
Unifiedpos is an international architectural specification for application interfaces to point - of - service devices that are used in the retail environment . it specifies all of pos device uniformly and is independent from operation system and language in the meanwhile in 1997 , sun microsystem inc . established the javapos standards . javapos standards committee was formed by a collection of retail vendors and end users , with a primary goal of providing device interfaces for the retail applications written in java Unifiedpos是一个国际的pos设备规范标准,它对各种pos设备进行统一规范,完全独立于操作系统,与语言无关, sun公司于1997年就已经完成了unifiedpos的java实现,形成了javapos标准,该标准的委员会由零售厂商和用户共同形成,主要目的是为基于java的零售应用程序提供设备接口。
With the development of computer networks , the computers of the enterprise used to do sales management , financial management , plan management , now has done with computer information management and computer integrated manufacturing systems and so on . sun microsystem . inc is the platform of enterprise to develop any application 随着网络技术的发展,企业中计算机的应用已经从单纯的销售管理、财务管理、计划管理,上升到计算机信息管理系统,甚至是还包括计算机辅助设计和计算机辅助生产的企业计算机应用系统。
The demand of the market is the motive power of technological progress . this paper studies the development technology of the mobile electronic commerce , analyzes the characteristics of sun microsystem inc . ’ s java technology in developing solutions of mobile electronic commerce , discusses on the technology systems of j2ee and j2me and developing instrument that is correlated with 市场的需求是技术进步的原动力,本研究课题系统研究了目前移动电子商务技术平台的开发技术,分析了sun公司的java技术在开发移动电子商务解决方案方面的特点,探讨了j2ee和j2me的技术体系以及相关的开发工具。
Micro electro - mechanical system ( mems ) refers to a kind of microapparatus or microsystem which combine microstructures , microsensors , microactuators as well as corresponding signal disposal control circuits into a whole . it is the product of combination of varied disciplines including machine , material , information and autocontrol and so on 微机电系统是指集微型结构、微型传感器、微型执行器以及相应的信号处理控制电路等于一体的微型器件或系统,它是机械、材料、信息与自动控制等多种学科相结合的产物。
Microsystem is the name commonly used in Europe to describe the same technology which goes under the name MEMS (Micro Electro Mechanical Systems) in the US. In Japan, this field is often termed micromachines.