bselliott

Monday, March 24, 2008

WAP / GPRS / UMTS / HSDPA multiplayer game

A GPRS connection which is regular among GSM mobile phones can be used to share the data globally. Developers can connect a mass number of mobile games with a single server and distribute data among the players. Some developers have achieved cross platform games, allowing a mobile player to play against a PC. WAP and GPRS best supports twist based games and small RPG games. Most of the counties have a weak GPRS velocity in their carriers. In these types of games, the game communicates with a global server which takes action like a router between the mobile phones. Faster connections like UMTS and HSDPA allow real time multiplayer gaming though speeds will still supply some level of lag. Currently, there are a lot of multiplayer mobile games entering the market.

Monday, March 17, 2008

Battery powered mobile phones

Mobile phones commonly obtain power from batteries which can be recharged from mains power, a USB port or a cigarette lighter socket in a car. Formerly, the most regular form of mobile phone batteries were nickel metal-hydride, as they have a low size and weight. Lithium-Ion batteries are sometimes used, as they are lighter and do not have the voltage depression that nickel metal-hydride batteries do. Many mobile phone manufacturers have now switched to using lithium-Polymer batteries as different to the older Lithium-Ion; the main advantages of this being even lower weight and the possibility to make the battery a shape other than strict cuboids. Mobile phone manufacturers have been experimenting with alternate power sources, together with solar cells.

Monday, March 10, 2008

Tandem Computers

Tandem Computers was an early manufacturer of fault tolerant computer systems, marketed to the growing number of transaction processing customers who used them for ATMs, banks, stock exchanges and other related needs. Tandem systems used a number of redundant processors and storage devices to supply high-speed "failover" in the case of a hardware failure, an architecture that they called NonStop. Over the two decades from the 1970s into the mid-90s, Tandem systems developed from custom hardware to commodity CPU designs. The company was eventually purchased by Compaq in 1997 in order to give that company with more robust server offerings. Today their software is still known as NonStop, as a divide product line offered by Hewlett-Packard.

Tuesday, March 04, 2008

Physics in Natural science

Physics embodies the study of the fundamental constituents of the universe, the forces and connections they exert on one another, and the results produced by these interactions. In general, the physics is regarded as the fundamental science as all other natural sciences utilize and obey the principles and laws set down by the field. Physics relies heavily on mathematics as the logical framework for formulation and quantification of principles.

The study of the principles of the universe has a long history and largely derives from shortest observation and experimentation. The formulation of theories about the governing laws of the universe has been essential to the study of physics from very early on, with philosophy gradually yielding to systematic, quantitative experimental testing and observation as the source of verification. Key historical developments in physics include Isaac Newton's theory of universal gravitation and classical mechanics, an understanding of electricity and it's relation to magnetism, Einstein's theories of special and common relativity, the improvement of thermodynamics, and the quantum mechanical model of atomic and subatomic physics.

The field of physics is extremely broad, and can contain such diverse studies as quantum mechanics and theoretical physics to applied physics and optics. Modern physics is becoming increasingly specialized, where researchers tend to focus on a exacting area rather than being "universalists" like Albert Einstein and Lev Landau, who worked in multiple areas.