Talk about the application of NC2000G in teaching

The time to contact and use NC (Network Computer Abbreviation NC) is not short. With the deepening of the understanding of NC, I feel the difference between NC and PC (Personal Computer Abbreviation PC). I will talk about it here. Talk about the application of network computer NC2000G in teaching.
The network computer is a terminal device dedicated to the network computing environment. Compared with PCs, there are no storage devices such as hard disks, floppy drives, and optical drives. It obtains resources through the network, and application software and data are also stored on the server. Because of these characteristics, NC2000G has the following advantages in teaching:
1. Right management: There is no storage device on the network computer NC2000G terminal, and all programs are run on the server, so that you can easily understand the status of students, avoiding some problems such as online chatting and playing games. In addition, the permissions of all user terminals are also controlled by the server side, and the control of running application programs and the control of user login computer systems can be set on the server side.
2. Easy to maintain: NC2000G obtains resources through the network, is a terminal device in the network computing environment, there will be no PC system crash and other phenomena, and it is convenient to install the operating system: 60 NC machines need only be installed on 3 servers Operating system, very fast. It is also very simple to install or delete the software used in teaching, just operate on the server side. In addition, the NC machine system is simple to use, the hardware integration is stable, and there is basically no local fault. The failure rate is extremely low, which is very suitable for school use.
3. Low cost: In terms of software cost calculation, NC2000G only needs to install the program on the server, saving a lot of cost to purchase software. For example, OFFICE2003, the price of a set of OFFICE2003 is 3,100 yuan. According to the calculation of 60 computers in a computer room, the computer room needs 186,000 yuan, and the NC2000G computer room costs only 9,300 yuan. Similarly, many commercial software only need a few sets to meet the use, and the cost is greatly reduced. Calculated from the cost of hardware, the structure of NC2000G is simple: there is no floppy drive, optical drive and hard disk. Compared with the configuration price, NC is 1/3 of PC. In addition, the power of the NC is only 15W, which is 1/20 of the PC, which saves a lot of electricity for the user.
4. Strong security: NC2000G does not have a local storage device and cannot be infected with viruses. In addition, assign resources to each machine on the server and set user permissions. Each machine is independent and does not affect each other. It is safe. There is also a phenomenon of loss of work data on the PC due to sudden software and hardware problems, which will not occur when using NC2000G. All user applications and stored files are on the server, and users will not lose data on the server if they log out normally or abnormally.
5. Convenient operation: The characteristic of network computer that is easy to use and operate is that the user can use it skillfully without any computer application knowledge. There are only two things users need to do: 1) Turn on the power; 2) Connect to the server. Switching NC is as simple as home appliances. This is undoubtedly very convenient for students without any basic computer skills.
6. Upgrade-free: NC2000G adopts a new network architecture. Compared with PC, the terminal client does not need to be upgraded at all. Whether it is a hardware upgrade or a software upgrade, it only needs to be done on the server side, thereby saving a lot of manpower and material resources.
7. Low noise: NC 2000G has no hard disk, optical drive, floppy drive and other mechanical running parts, and the embedded CPU used has little heat generation, no fan cooling, and the work is very quiet and no noise. Very suitable for school applications.
8. Space saving: NC2000G has high integration, compact structure, and takes up very little space. Students can have a more spacious use environment.
While NC2000G has the above characteristics, it is also limited by its own structure and hardware resources. There are some deficiencies in school teaching. Such as:
1. NC2000G running software with high calculation requirements is not ideal and slow. When multiple NC machines run PHOTOSHOP, 3DMAX, FLASH, AUTOCAD, FIREWORKS, DREAMWEAVER, AUTOWARE, VISUALFOXPRO and other software very slowly, they cannot even run.
2. NC2000G has high requirements on server performance. When multiple NC machines are working at the same time, the CPU usage of the server reaches 100%, and there is a delay in running the program. Therefore, a server with excellent performance is the backing of NC operation.
3. The display format of NC2000G is low, it supports 16-bit color, and does not support true color. The color information is not rich enough.
4. The processing capacity of NC2000G to play streaming media above MPEG2 is still insufficient. Streaming media playback above MPEG2 is not smooth enough, which has an impact on multimedia teaching applications.
In summary, the application of NC2000G in professional and personalized functions such as large-scale computing, complex image processing, and three-dimensional production cannot meet the requirements of PC, but it can fully meet the needs of school education and information construction. Therefore, it has broad prospects in school applications.

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