A thin client (or a lean client) is a network computer without a user writable long term storage device, which, in client/server applications, is designed to be especially small so that the bulk of the data processing occurs on the server. The embedded OS in a thin client is stored in a "flash drive", in a Disk on Module (DOM), or is downloaded over the network at boot-up. The embedded OS in a thin client usually uses some kind of write filter so that the OS and its configuration can only be changed by administrators.

Thin client (computing): A server-centric computing model in which the application software, data, and CPU power resides on a network server rather than on the client computer.

A thin client (or a lean client) is a network computer without a user writable long term storage device, which, in client/server applications, is designed to be especially small so that the bulk of the data processing occurs on the server. The embedded OS in a thin client is stored in a "flash drive", in a Disk on Module (DOM), or is downloaded over the network at boot-up. The embedded OS in a thin client usually uses some kind of write filter so that the OS and its configuration can only be changed by administrators.

Thin client (computing): A server-centric computing model in which the application software, data, and CPU power resides on a network server rather than on the client computer.

A thin client as an application program communicates with an application server and relies for most significant elements of its business logic on a separate piece of software, an application server, typically running on a host computer located nearby in a LAN or at a distance on a WAN or MAN.

A thin client does most of its processing on a central server with as little hardware and software as possible at the user's location, and as much as necessary at some centralized managed site.

Other definitions of thin versus thick/fat client application program try to draw the line at whether the deployment of the application requires the installation of additional software at the user site or not. Unfortunately, this is also arguable, since e.g., a browser used for a client application might be part of one client platform, but not the other. So on one platform no additional software installation is required, while another client platform requires it. The only objective definition would seem to be whether the boot image that is normally used
……

多媒体教学网又叫计算机多媒体电子网络教室，通常简称为网络教室，是指在微机单机或网络机房的基础上利用多媒体技术实现教师机和学生机之间屏幕和声音的交互切换，并辅助多种其他教学功能的计算机网络教室。 包括：多媒体教学网的教学应用 、作为学生学习的多媒体教学网；作为学校的Internet网上冲浪室；作为老师的网络备课室；课件制作；广播教学； 语音室；教师培训。

多媒体网络教室解决方案

硬件方案: 终端方案优越性综述 、资源共享、易于管理 ；终端解决方案首先体现了一种集中管理、资源共享的理念。学生使用授权可使用的软件（比如只许使用收费软件），学生无法随意删改权限。终端可根据行业特点进行裁剪。根据工作需要，可以不允许用户使用浏览器，可以不授权学生调用游戏软件，而且学生自己很难改变这些配置。 

资源共享分为两个方面。硬件方面讲，外围设备（例如打印机、扫描仪等）可以只配置一套，直接连到服务器上，每个终端用户可以共享这些硬件资源。软件资源的共享更为明显。收费软件只需在服务器上装一套。另外，像WORD、EXCEL这样的常用办公软件，在PC解决方案中每台PC都要买一套，现在只需在服务器上配备一套，每个终端用户可以同时调用这些软件（如果授权可使用的话）。 

免维护、免升级、免病毒 

终端采用一体化的设计，无软驱、无光驱，无硬盘，基本上无需维护和升级。一切软硬件升级和维护都只需在服务器端进行。另外，一体化的设计也减少了病毒的入口，再通过服务器的集中过滤，基本可以把病毒挡在门外。而PC机中的软驱和光驱都是病毒的介入口，很容易感染病毒，引起系统崩溃，从而造成系统维护费用的增加。