PDF Portable Document Format
By ADOBE document file format developed by the use of ADOBE ACROBAT READER to read and print, as PDF file itself carries the information graphics and fonts, so regardless of any platform (PLATFORM), using ACROBAT to open and print the document can maintain the content and appearance of the original document. PDF can not be directly used in Chinese or other DBCS characters, need to use DISTILLER the conversion.

Peer-to-peer peer technology (referred to as P2P)
As the name suggests is the "users and users" means, there are two main applications:P2P file sharing, and Distributed Computing. The former allows users direct access to other computers on the network in a file (such as domestic or foreign Ezpeer the Kazaa, etc.); the latter may be combined on multiple computers together to solve a single problem.
In the first P2P network, the same computers on the network, whether laptop or desktop PC can act as a server on the network to share files to other users. Generally small office not have a dedicated file server will use P2P networks, while the Internet has also become increasingly popular type of software, is available to User prior to Napster to share MP3 files with its notoriously, but it also led to music copyright infringement lawsuit which sadly closed.
The second P2P computing is on the same network to share CPU resources, the same computers on the network can form an enormous super-computer, each user can be unused to the CPU resource sharing. In large enterprises, part-time there will always be many computers are in standby mode, this makes the use of P2P technology can be brought cope with the huge computing problems. Similarly, the network shared by millions of out of CPU resources would be very considerable, and even aliens can be used to explore the processing and analysis program (SETI). P2P computing is also known as grid computing (grid computing) or a distributed computing (distributed computing).

Peering Internet
Establish a direct connection between the two ISP to reduce the backbone network (BACKBONE) toll way.

Pentium Processor
The Pentium 4 brand refers to Intel's line of single-core mainstream and high-end desktop and laptop central processing units (CPUs) introduced on November 20, 2000[1] (August 8, 2008 was the date of last shipments of Pentium 4s[2]). They had the 7th-generation microarchitecture, called NetBurst, which was the company's first all-new design since 1995, when the Intel P6 microarchitecture of the Pentium Pro CPUs had been introduced. NetBurst differed from the preceding Intel P6 (Pentium III, II, etc.) by featuring a very deep instruction pipeline to achieve very high clock speeds[3] (up to 3.8 GHz) limited only by TDPs reaching up to 115 W in 3.4 GHz –3.8 GHz Prescott and Prescotts 2M cores[4] (a high TDP requires additional cooling that can be noisy or expensive). In 2004, the initial 32-bit x86 instruction set of the Pentium 4 microprocessors was extended by the 64-bit x86-64 set.