Application of EIP in thin client

Application of EIP in thin client

[system overview

thin client, also known as NC (network computer) It is the abbreviation of network computer, which refers to the desktop computer that obtains most of the resources through the network and calls the applications and data stored on the server in the network computing environment. It does not carry any external memory such as hard disk, floppy disk and CD-ROM drive, nor does it have or only a few expansion ports

the concept of thin client is that it can start from a production line in about seven years. The NC revolution initiated by foreign manufacturers such as sun and Oracle eight years ago ended up because of the immature business model due to the limitations of network bandwidth at that time. With the maturity and development of network technology, the high-speed network foundation has rekindled the fire of NC life, making the realization of NC have the most basic physical foundation

nc is mainly developed in the following directions, including education (online classroom, multimedia teaching), government office automation (tax, salary management, personnel management, file management, etc.), terminal query system (train ticket system query, shopping mall goods query, etc.), city electronic map, online storage... At present, the most important is still concentrated in the first two ways, namely education and office automation

[system requirements

according to the working principle of the system, it can be divided into server and thin client terminal:

server:

(1) high reliability, availability and stability

(2) rich management flexibility

(3) strong data processing ability

(4) good scalability.

thin client terminal:

(1) simple configuration

toughness (2) Effectively prevent virus infection

(3) easy to operate Maintenance

(4) support multiple network connections

[system principle

main principle: all the programs of the client run on the server. What the client sends to the server is only the keyboard and mouse information, and what the server sends to the client is the optimized and compressed image update information, with little information transmitted on the network. In this way, the performance of the client running program has nothing to do with the local of the client, but is related to the performance of the server.

typical application reference of thin client - campus

[system application

E-teaching

(1) convenient for teachers' Teaching

(2) help learning is not conducive to long-term competitive students' learning

(3) convenient for computer room teachers' management

(4) independent learning in the classroom

educational office automation

(1) document management subsystem

(2) public information subsystem

(3) personal information subsystem

(4) campus integrated information system

[system block diagram

Terminal thin client configuration

configuration a:

vertical hard plastic chassis (L 15cm * W 10cm * h 5cm)

motherboard eccldna on-board GX1 200m (300m) CPU, an Ethernet port, VGA interface, a parallel port, two USB, two RS-232, a ps/2 keyboard mouse interface

128sdram memory

external + 5V transformer power supply

lcd/crt display (optional)the

configuration you want the body material to become soft b:

vertical hard plastic chassis (L 20cm*w 15cm*h 10cm)

mainboard EC cldna on-board GX1 200m (300m) CPU, one Ethernet port, VGA interface, one parallel port, two USB, four RS-232, A ps/2 keyboard and mouse interface

128sdram memory

external + 5V transformer power supply

lcd/crt display (optional)

[system configuration

Yanxiang company aims at the needs of the thin client market, integrates the professional advantages of Yanxiang company in all aspects of development, production and service, and introduces the optimal solution of the thin client terminal for the reference and selection of manufacturers in the industry. Eccldna is selected as the main control board of the thin client terminal. The following figure:

recommended configuration scheme:

(1) Chassis: vertical hard rubber material chassis, size L 15cm * w 10cm* h 5cm

(2) motherboard: eccldna. On board GX1 200m (or 300m) CPU, 10/100m Ethernet controller RJ45 interface, VGA interface, two USB interfaces, one parallel port, two RS-232 ports, one ps/2 keyboard mouse port and solid-state disk interface

(3) memory: 128MB SDRAM

(4) display: lcd/crt (optional)

(5) power supply: external + 5V DC power supply

[system evaluation

(1) GX1 CPU is used, with low power consumption.

(2) integrated motherboard is used, with excellent component selection and high reliability.

(3) small size, size is only 146mm × 102mm。

(4) rich IO interfaces are suitable for more applications

(5) no additional fan is required to reduce system failure

(6) effectively prevent the loss of important data and virus infection, and reduce the burden of maintenance and management

(7) high cost performance and effective cost control