TCP Transmission Control Protocol
TCP and IP as a TCP / IP in the main transmission control protocol, IP is responsible for packets (PACKET) transmission to receive such non-links (CONNECTIONLESS) work, TCP is responsible for establishing link-oriented (CONNECTION-ORIENTED) communication, meaning that data before sending , TCP will create an effective connection and the use of error checking, etc. to ensure that the information is correct delivery, if an error occurs, TCP will automatically attempt to retransmit the information, but simply sending IP data packets and does not confirm whether the information correctly addressed. TCP use IP to create a link in fact, and use IP to send data and as the two hosts (HOST) data transmission between the confirmation and other activities.

TCP / IP Transmission Control Protocol / Internet Protocol
Internet (INTERNET) The main protocol (PROTOCOL), can also be used as a local area network (LAN) protocol .TCP / IP in fact by several protocols and services posed by: 1. IP: Basic No links (CONNECTIONLESS) data transfer .2. TCP: create a link-oriented (CONNECTION-ORIENTED) of the data transmission .3. ICMP: transport control and management information .4. ARP / RARP: In the local area network (LAN) of the DATALINK IP and MAC layer to do the conversion .5. UDP: add the source and purpose of the non-SOCKET IDENTIFIER link data transmission .6. TELNET: remote login terminal (TERMINAL) simulation program .7. FTP: file transfer .8. SMTP: e-mail (E-MAIL) information exchange .9. DNS: domain name (DOMAIN NAME) service .10. NFS: Network File Services.

TCPA / Palladium Trusted Computing Platform Alliance / Microsoft proposed with software
TCPA sponsored by Intel, a founding member, including Compaq, HP, IBM and Microsoft. TCPA's goal is to "provide a new computing platform for PC system more trustworthy." Palladium is Microsoft's next Windows operating system is expected to add software, must be with TCPA hardware architecture and to provide additional functionality.

TCPA / Palladium's role
In short, the user's software usage will be subject to strict regulation, but also can safely be connected with the software makers. The most immediate application will be DRM (digital rights management) software: the future of the Hollywood Palladium in support of DVD movies will only play on the platform, users can not copy; music makers can sell music downloads, but consumers can not be passed to others to use , or you buy a CD will only play three times, a variety of new marketing model may be subsequently derived.
In addition, TCPA / Palladium will also be an inhibiting effect on the pirated software. Software providers will be able to detect the users of pirated computer software and direct it for you to delete; software is relatively easy to set up rental business model, rather than selling mode, if the user stops hiring, not only software Paobu Dong, maybe even before the created files are not open. Software companies have always been powerless against piracy, but the Palladium 1, pirates little clear evidence.
Palladium while lots of other good, but there are also disadvantages: a disguised form of remote monitoring. This feature originally used to detect pirated software and automatically be deleted, but may become a law enforcement agency in disguise consumer computer to delete the illegal files (such as pornographic images, etc.); software vendors can also allow users to more difficult to arbitrarily change the software, such as Word can encrypt all the files that only Microsoft products can be opened. In other words, consumers can be read only use Microsoft products to be content, compatibility with other rival products can not be read.

TCPA / Palladium mechanism
TCPA implementations are installed on a smart card chip on the motherboard. After the computer starts, this one TCPA chip will check whether all the hardware and software in the "trusted" state, if the hardware configuration changes, or software serial number expired, expired license and so on, the computer must be re-certified on-line procedures to ensure that the computer will always be in "approved" situation. , The whole right to control by the operating system to run the software to carry out (if you are a Windows, That is the Palladium).
Once your computer into the trust state, TCPA chip will be declared this to a third party certification, such as through the Certified Agreement, it can be to the Disney confirmed that this computer can receive "Snow White" to download and so on, Disney server then send encrypted data to the computer at the same time TCPA can receive a set of decryption keys. TCPA chip will ensure that only authorized software can use it to key.

TD-SCDMA (Time Division Synchronous Code Division Multiple Access)
Since the adoption of 2G standards in China's footsteps later, resulting in a lack of adequate communications bandwidth, the expansion of market size is thus limited. China uses a variety of 3G network will address the current capacity shortage problems, but because of expensive infrastructure, making mobile communications industry, tends to slow the pace of investment.
By Data Mobile and Siemens developed out of the first TD-SCDMA standard for the industry from the existing GSM / GPRS networks transferred to a third-generation communication systems, not to be carried out on large infrastructure changes.
TD-SCDMA dual-mode 2G/3G mobile phone so that a smooth access to the services provided by different networks. Therefore, the industry may be in accordance with market demand, build the appropriate 3G network. In addition, TD-SCDMA can make use of unused bandwidth construct additional communications capacity to meet the needs of a large metropolitan area.