Now, Send SMS Through Your Thoughts!

The Japanese are developing a new generation of consumer electronics devices that have the ability to read a user's mind and automatically do as he wishes. For instance you could change a television channel by thinking or even send an sms composed through your thoughts, reports Yahoo! News. Tomoo Yamauchi, director, research and development division, Ministry of Internal Affairs and Communications, said that a clutch of Japanese companies and research institutes are working on the gadgets, which could be commercially available in as little as ten years

Dell To Launch Its Own Mobile Phone

Computer maker Dell is launching its own cellphone, which some feel is akin to a piece of art. Called the lightning Mobile, it is being portrayed as the ultimate Windows 7 Phone. At first glance it looks like all screen until the hidden QWERTY keyboard reveals itself to slide the screen up. The Windows Phone 7 portrait slider comes with multi touch features.

The phone will be available with an extended 11 cm (4.1") OLED display, a 1GHz QSD8250 Snapdragon processor, and comes equipped with 1GB of flash with 512MB Ram, and a MicroSD card with additional 8GB of storage.

Diode

In electronics, a diode is a two- terminal electronic component that conducts electric current in only one direction. The term usually refers to a semiconductor diode, the most common type today, which is a crystal of semiconductor connected to two electrical terminals, a p.n junction. A vacuum tube diode, now little used, is a vaccume tube with two electrodes; a plate and a cathode

The most common function of a diode is to allow an electric current in one direction (called the diode's forward direction) while blocking current in the opposite direction (the reverse direction). Thus, the diode can be thought of as an electronic version of a check valve. This unidirectional behavior is called rectification , and is used to convert alternating to direct current, and extract modulation from radio signals in radio receivers.

However, diodes can have more complicated behavior than this simple on-off action, due to their complex non linear electrical characteristics, which can be tailored by varying the construction of their pn junction. These are exploited in special purpose diodes that perform many different functions. Diodes are used to regulate voltage zener diode, electronically tune radio and TV receivers (varactor diode), generate radio frequency diode tunnel diode, and produce light (light emitting diode)

Diodes were the first semiconductor device. The discovery of crystals' rectifying abilities abilities was made by German ferdinand braun in 1874. The first semiconductor diodes, called cat's wisker diode were made of crystals of minerals such as gelena. Today most diodes are made of silicon, but other semiconductors such as germanium are sometimes used

Solar cell

A solar cell is a device that converts the energy of sunlight directly into electricity by thephotovoltics cell. Sometimes the term solar cell is reserved for devices intended specifically to capture energy from sunlight such as solar panels and solar cells, while the term photovoltaic cell is used when the light source is unspecified. Assemblies of cells are used to make solar panel, solar module. photovoltics is the field of technology and research related to the application of solar cells in producing electricity for practical use. The energy generated this way is an example of solar energy

Applications and implementations

Solar cells are often electrically connected and encapsulated as a module. Photovoltaic modules often have a sheet of glass on the front (sun up) side, allowing light to pass while protecting the semiconductor wafers from the elements . Solar cells are also usually connected in series in modules, creating an additive voltage.

above figure is systematic symbol of solar cell

onnecting cells in parallel will yield a higher current. Modules are then interconnected, in seri

es or parallel, or both, to create an array with the desired peak DC voltage and current.

The power output of a solar array is measu

red in watts or kilowatts. In order to calculate the typical energy needs of the application, a measurement in wattshours, kilowatt-hours or kilowatt-hours per day is often used. A common rule thumb is that average power is equal to 20% of peak power, so that each peak kilowatt of solar array output power corresponds to energy production of 4.8 kWh per day (24 hours x 1 kW x 20% = 4.8 kWh)

To make practical use of the solar-generated energy, the electricity is most often fed into the electricity grid using inverters (grid-connected photovoltaic systems); in stand-alone systems, batteries are used to store the energy that is not needed immediately.

Solar cells can also be applied to other electronics devices to make it self-power sustainable in the sun. There are solar cell phone chargers, solar bike light and solar camping lanterns that people can adopt for daily use.

ABSTRACT

Real-time systems play a considerable role in our society, and they cover a spectrum from the very simple to the very complex. Examples of current real-time systems include the control of domestic appliances like washing machines and televisions, the control of automobile engines, telecommunication switching systems, military command and control systems, industrial process control, flight control systems, and space shuttle and aircraft avionics.

All of these involve gathering data from the environment, processing of gathered data, and providing timely response. A concept of time is the distinguishing issue between real-time and non-real-time systems. When a usual design goal for non-real-time systems is to maximize system’s throughput, the goal for real-time system design is to guarantee, that all tasks are processed within a given time. The taxonomy of time introduces special aspects for real-time system research. Real-time operating systems are an integral part of real-time systems. Future systems will be much larger, more widely distributed, and will be expected to perform a constantly changing set of duties in dynamic environments. This also sets more requirements for future real-time operating systems. This seminar has the humble aim to convey the main ideas on Real Time System and Real Time Operating System design and implementation.


INTRODUCTION

Timeliness is the single most important aspect of a real -time system. These systems respond to a series of external inputs, which arrive in an unpredictable fashion. The real-time systems process these inputs, take appropriate decisions and also generate output necessary to control the peripherals connected to them. As defined by Donald Gillies “A real-time system is one in which the correctness of the computations not only depends upon the logical correctness of the computation but also upon the time in which the result is produced. If the timing constraints are not met, system failure is said to have occurred.”

It is essential that the timing constraints of the system are guaranteed to be met. Guaranteeing timing behavior requires that the system be predictable. The design of a real -time system must specify the timing requirements of the system and ensure that the system performance is both correct and timely.
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Virus Attack on Computers, Mobiles And Palmtops (SEMINAR TOPIC)

INTRODUCTION

Do viruses and all the other nasties in cyberspace matter? Do they

really do much harm? Imagine that no one has updated your anti- virus software for a few months. When they do, you find that your accounts spreadsheets are infected with a new virus that changes figures at random. Naturally you keep backups. But you might have been backing up infected files for months. How do you know which figures to trust? Now imagine that a new email virus has been released. Your company is receiving so many emails that you decide to shut down your email gateway altogether and miss an urgent order from a big customer. Imagine that a friend emails you some files he found on the Internet. You open them and trigger a virus that mails confidential documents to everyone in your address book including your competitors. Finally, imagine that you accidentally send another company, a report that carries a virus. Will they feel safe to do business with you again? Today new viruses sweep the planet in hours and virus scares are major news.A computer virus is a computer program that can spread across computers and networks by making copies of itself, usually without the user’s knowledge. Viruses can have harmful side effects. These can range from displaying irritating messages to deleting all the files on your computer. A virus program has to be run before it can infect your computer. Viruses have ways of making sure that this happens. They can attach themselves to other programs or hide in code that is run automatically when you open certain types of files. The virus can copy itself to other files or disks and make changes on your computer. Virus side effects, often called the payload, are the aspect of most interest to users. Password-protecting the documents on a particular day, mailing information about the user and machine to an address somewhere are some of the harmful side effects of viruses.address somewhere are some of the harmful side effects of viruses.Password-protecting the documents on a particular day, mailing information about the user and machine to an Various kinds of viruses include macro virus, parasitic or file virus, Boot virus,E-mails are the biggest source of viruses. Usually they come as attachments with emails. The Internet caused the spreading of viruses around the globe. The threat level depends on the particular code used in the WebPages and the security measures taken by service providers and by you. One solution to prevent the viruses is anti-virus softwares. Anti-virus software can detect viruses, prevent access to infected files and often eliminate the infection.Computer viruses are starting to affect mobile phones too. The virus is rare and is unlikely to cause much damage. Anti-virus experts expect that as mobile phones become more sophisticated they will be targeted by virus writers. Some firms are already working on anti-virus software for mobile phones. .......for complete information contact us or leave email id in message box.