Category Archives: Computer

Studying Computer Science in Rajasthan

In the present era of access to communication and information being the order of the day, a degree scroll in Computer Science (B.Tech or MCA) is a prized asset. Youngsters who had opted for PCM (physics, chemistry and mathematics) as the main subjects aspire to earn a degree in this engineering stream.

This is the prevailing scenario of higher education across the state of Rajasthan. Bright scholars wish to further supplement their academic qualification with a post-graduate degree of M.Tech. For instance M Tech Computer Science courses in Rajasthan have been much sought-after by such students.

An M.Tech in Computer Science is similar to a passport to El Dorado since engineers from this branch command a premium as per the latest market dynamics. They are hired by both government and corporate entities for varying high-tech tasks. These range from core engineering, R&D, manufacturing and quality control to consultancy and software solutions.

Rajasthan has scores of academia imparting top quality education in engineering. These colleges function under central, autonomous or private universities. There are around 33 institutions which offer M.Tech in Computer Science. Almost all the engineering colleges are periodically monitored by the National Assessment and Accreditation Council (NAAC).

Although criteria for admission to M.Tech degree in these colleges as prescribed by respective university may differ, minimum 50 to 55% marks is a must in the state of Rajasthan. Besides the written-test, certain colleges conduct personal interview and counselling to assess a student’s overall calibre.

There are around 50 top institutions offering M. Tech Computer Science courses in Rajasthan. Some of these colleges enable the students to reinforce their knowledge in PCM, basic engineering, social sciences, management and humanities. With this as the foundation, the course focuses on the core subject of computer science engineering (CSE).

Deserving brilliant and also economically poor students are granted scholarships in their quest for M.Tech degrees. Some of these institutions provide ample opportunities for the students to undertake consultancy projects as case studies. In addition to a study tour, they are also given an exposure to the corporate and industrial environment that could last from four to six weeks. To top it all, potential employers scout for talented engineers by holding ‘On-the-Campus’ interviews.

Every year, in the month of March, admission notices from different reputed colleges and universities appear in all the major newspapers of the state of Rajasthan. Interested students can appear for an entrance examination which is taken to assess the concerned student’s capabilities, calibre and aptitudes in computer engineering.

Solar Panels Provide a Green Energy Solution

Solar cell technology has been in existence for over 60 years. Solar modules, commonly referred to as photovoltaic panels, have been used to generate electricity from light ever since the silicon based semiconductor was invented. No longer a laboratory curiosity, solar cells are an industry unto themselves and are as common in energy generation as conventional power generation methods such as steam turbine driven generators and nuclear power plants. There are many solar energy collection methods in use and available today. We will investigate the more common electricity producing solar energy devices: photovoltaic cells and PV modules.

How does a PV module generate electricity from light?

Solar Cell

Solar cells are made of materials that are electrically activated when light strikes their surfaces. This unit, a solar cell, operates without moving parts and never wears out! Add many cells together and you have a solar array or a photovoltaic module. The more cells, the higher the power that is possible to generate from the modules.

Cell Layers

The top layer of the solar cell or wafer contains a silicon layer which has free electrons which are negatively charged particles. A boron enhanced bottom layer contains spaces or holes, that let electrons move into the open spaces. The manufacturing process creates this electron imbalance between the two layers within this semiconductor material. This imbalances is responsible for the operation of the solar cell which creates the electrical current and voltage.

The Sun Strikes the Solar Cell

Photons from the sun hit the outside of the photovoltaic cell. This activity excites the free electrons in both silicon layers. Some electrons in the bottom layer travel to the silicon layer at the top of the cell. Electron flow moves through metal contacts located on the solar cell’s front and back which creates electricity. Electrons flow in a closed loop or electrical circuit. Combining multiple solar cells has an additive effect on voltage and current depending on how they are “strung” together. Think of each cell as a battery. Stringing the cells in series (negative to positive) will add voltage and keep amperage the same as for one cell. Stringing the cells in parallel will keep voltage the same as for one cell but add the amperage of the cells.

Powering With Solar

Solar panels generate electrical current which is transmitted to an inverter. The inverter changes direct current into alternating current which matches the electricity that your power company provides. Appliances and power equipment operate with AC current. In the United States, power is generated at 60 hertz whereas in Europe, 50 hertz is the norm.

The solar electrical power feeds into the wiring of a house, business or power plant and into the electrical utility’s power grid. An independently operated power system also can act as its own utility. This “off-grid” system requires batteries to store power when the solar panels produce more power than the load needs and is discharged when the solar modules cannot capture enough energy from the sun to offset the electrical loads from the home or business.

Converting Silicon Wafers Into Photovoltaic Cells

The computer chip industry has made the low cost production of the solar cell possible. The strides in yield, processing and quality have made the photovoltaic cell manufacturing process current state-of-the-art and scalable. While the process is matures for silicon wafer production, the techniques are time consuming and important in achieving the desired performance outcomes. The silicon wafer starts out as an ingot of silicone material and then is sawn into the characteristically round wafers that you see on a solar module.

EtchingA Wafer

The part of the solar cell process requiring a clean room incorporates chemical and heat treatments that convert the greyish silicon wafers into live, blue colored cells. A chemical etch removes a tiny layer of silicon. Underneath this layer, a crystal structure reveals a pyramid shaped surface that absorbs more light.

Diffusing

Silicon wafers are placed into ovens where phosphorus is diffused into the wafer surface. This step deposits a molecular sized deposit as the wafer surface is exposed to phosphorus gas at a high heat. This step gives the surface a negative potential electrical charge. This layer and the boron-doped layer beneath the surface create a positive-negative, or P/N, junction which is the basis of a PV cell. This is also how a semiconductor chip is made.

Coloring And Printing

The cells are placed into vacuum chambers where silicon nitride is deposited onto the side of the wafer that will be exposed to the sunlight. The coating with silicon nitride is designed to reduce light reflection. This process gives the cell its dark blue color. The cell is ready to produce electricity but still need a means to collect and forward the power to the load. Metal stripes are printed on both sides of the cell so that electrical charge collection and landing areas for wires can be added to the wafer. When this step is complete, the cell is ready to produce power.

Attaching Cells Into Solar Panels

Cells are arranged to create the voltage and amperage profile of the completed solar panel. If you look at the various brands of solar panels on the market, you will notice that the cell arrangement dictates both of these attributes of home solar panels and commercial type solar panels. Consequently, the physical frame size of the PV module is set by the solar cell arrangement.

Soldering

Cells are soldered together into series strings which involves electrical bonding of the wafers together to form one module. Several strings are connected to form a rectangular matrix of cells. Each cell matrix is laminated onto glass using a robust adhesive system that ensures the completed panel will survive normal environmental loads.

Framing

The outer frame of the solar module provides protection against weather and impact loads and also includes the electrical connection which could be a junction box or a standard electrical cable connector. These are commonly used in other electrical devices.

Location, Location, Location

Siting the solar module array requires the chance to collect as much sunlight as possible during the seasonal variation in sun intensity.

Rooftop systems provide a ready platform since the surface is often tilted toward the sun and the surface is unusable for most any other device.

Ground-mounted systems are good options where roofs are unavailable or too small in area. Modules are mounted on racks which are ground anchored and accessible for service or adding additional solar modules.

Canopy systems work well in shed roof applications such as parking areas.

Utility-scale systems are normally large scale power creating units that are sized for utility grade use and not usually limited in land area.

Tracking systems optimize output power by moving the solar modules according to the sun’s path.

Summary

Solar modules are a union of solar cells and the technology that makes computer chips lower cost than just a decade ago. The inherent reliability of the solar modules used for home solar panels is due to the lack of moving parts and the high reliability parts and processes that make the solar module reality. There are virtually no limits to the types of solar electric systems that can be designed and very few limitations on location as long as there is abundant sunlight.

Computer Games Present a Delicate Parental Balancing Act

Parents of teens who exhibit signs of active addiction to computer games may find the following discussion very enlightening.

Whether anyone cares to acknowledge it, games can be habit-forming. Virtual game developers employ every possible strategy to capture players’ sustained interest.

How do you identify the point at which your adolescent’s attachment to computer games has become obsessive? Engaging in gaming to the near-exclusion of other ordinary life activities is a clear sign. In such a case, it is very important for parents to prevent rational discussion of the matter from becoming a full-scale battle of wits and verbal insult “contest.”

Many modern teens acquire a high level of skillful debating ability early in life. Thus, their adult custodians must stay completely objective and compliment positive behavior when approaching teens who have become hooked on computer games. Do not allow the discussion to be diverted into a critical comparison of other parents who permit their youngsters to play such games for endless hours.

It is often easy for parents to believe themselves to be wiser than their kids and therefore capable of directing our offspring’s behavior while attempting to overlook our own faults. Do not fall for intuitively appealing arguments that five hours in front of computer game consoles pales in comparison to the amount of time spent on your Blackberry or similar electronic devices.

Prompt intervention prior to displacement of all other important pursuits online gaming is the best strategy. This means establishing firm limits on allowable gaming entertainment and imposing additional restrictions if you observe their health, grades, or social life suffering due to excessive gaming involvement.

Employ “tough love” if you encounter strong resistance to such measures. Do not be swayed by extreme emotional outbursts or physical “tantrums” like running away from home.

Extending effective assistance to a teen addicted to online games depends upon prompt recognition of danger signs that he or she has strayed off the right path. Common symptoms include easy irritability with individuals and ordinary situations and overly impulsive reactions to common scenarios. Upon noticing an undue increase in time spent on gaming-related pursuits, it is definitely “time out” for computer games!

Always substitute alternative wholesale activities for absent gaming time in your child’s life. Rigorous physical exercise is a particularly healthy option. Popular competitive sports like ice skating, hockey, dance, or baseball are perfect replacements. Pursuits that engage the mind such as theater, music, and fine arts are also excellent alternative recreational outlets.

Axe Tech Computer Repair

Purchasing a computer is really very essential in today’s world. With the innovation of the Internet and the facility of E-mail as a mode of communication, it is easy to see why most of the people like to have a computer in their office or home. Computers are just like anything else and there are various times when they do not operate as planned.

It is discouraging to be sitting at your desk, prepare to Play a Game or work on a document only to ascertain that your computer is not being cooperative. When it comes to the computer repair it is oftentimes wise to attempt out Professional help. A Computer technician is particularly trained to judge the problem and provide the best possible solution. There are certain kinds of computer repair that you may like to attempt yourself. These are normally minor fixes that can be addressed with a bit of attention and instruction to detail.

A computer repair that you may be capable to take care of yourself is the substitute of the Computer’s Battery or Fan. Each and every Desktop Computer contains a fan inside of it. This fan is utilized to keep the components of Computer’s cool. It is necessary that the Fan functions efficiently to ascertain that the Computer does not become overheated. The very first sign that your Computer’s fan may not be functioning properly is that, you will det6ect a different kind of sound when you run or start your Computer. Rather of immediately carrying it to a Computer repair shop, just take a moment to check the Fan.

Computers generally have two fans. One is utilized to cool the Power supply and the other one is utilized to cool the CPU. Just open the cover of your Computer and listen. If the sound doesn’t seem to be coming from the Fan which cools the CPU you will want to replace it. If the Computer is still under warranty period than this kind of Computer repair will be done totally free. Just follow the directions you were given by Axe Tech Repairs at the time of purchase. If the warranty period of your Computer has passed you can either take it to an Axe Tech Computer Repair shop or do it by yourself.

The first and most important step while doing any Computer Repair is to disconnect the Computer from the Electrical Outlet. You will then require examining the Fan to see how it is connected. It will believably be attached by some small screws. Once these are untied you will require disconnecting the Fan from its Power supply. This can be one or two very small clips.

Hi-Tech Computer

Hi-tech computer furniture is quite popular, with the latest designs from manufacturers ensuring that bland, dull looking computer furniture is a thing of the distant past. Hi-tech computer furniture is designed to look attractive, besides being functional and ergonomic.

There are different styles and models of hi-tech computer furniture. They include single-tier computer workstations, dual tier computer workstations, corner computer desks, telescopic computer carts, computer racks, computer wall mounts, computer holders, computer monitor arms and keyboard arms. There are also hi-tech corner computer desks designed to fit into corners, with the aim of minimizing wasted space.

Dual tier computer workstations have two surfaces, each independently electronically height adjustable. This feature not only allows the user to adjust the height of the monitors, tit also allow adjusting of the height of the work surface from a sit-down to a stand-up position. This arrangement offers a great level of flexibility for multiple users, with the ergonomic seats providing optimum body comfort and proper positioning.

Telescopic computer carts are very stylish, durable, strong and importantly, customizable. Most are made out of cold rolled 11 gauge steel frame. Finishing is usually Epoxy powder coating, though finishing can be customized according to the customer’s choice.

Another piece of hi-tech computer furniture is the wall mount with a “Z” arm. This piece is specially designed to take up as little space as possible and is meant for congested spaces with high traffic. It is also ideal for use by multiple users. Various components such as the keyboard tray, monitor arm and CPU holder can all be adjusted according to the user’s desires. The Z-arm allows the user to adjust the depth position of the LCD. The monitor can also be made to tilt up and down.

The LCD flat panel wall mounted arm operates using a gas spring mechanism. One unique feature of this piece of hi-tech furniture is that it is capable of holding the screen in any position without the need for knobs and levers of any sort. Moreover, the arm can be made to move in any direction including pivoting and tilting motions.

How is Silicon Valley and the US High Tech Computer Sector Doing

Every sector of the US Economy has felt the global economic crisis, some more than others; banking, auto manufacturing and hospitality industry to name a few. Still, some of the industry sectors we are most known for in the millennium have also been hard hit, harder than anyone cares to admit. So, let’s take a look at Silicon Valley and that realm shall we?

How is Silicon Valley and the US High Tech Computer Sector Doing, we ask? Well, we do not have to read very many headlines to consider the reality; AMD sales of computer chips down some 35% now, Intel over 20%; Yahoo lays off 600 employees after poor quarter, for example. Of course things just got a little worse as new unemployment rates came in from computer central in April of 2009; Silicon Valley unemployment pegged at 11% and expected to rise steeply before the recession ends.

Worse, it was promised by Larry Ellison to shareholders as he made a bid for Sun Micro that if Oracle buys Sun they will cut about 10,000 or more jobs. So, when you ask how things are doing, you can see; not so hot. On top of that we see Google cutting staff to keep its profits moving.

Speed Goes High-Tech

Modern cars come with performance chips in their electronic control unit. Most vehicles on the road have been tuned in such a way that they limit engine performance most often to comply with emission norms. However the computer chip inside your car can easily be programmed for engine optimization. You will notice increased gas mileage and smooth driving experience to start and on the long run, your engine will perform better as well. For maximum horsepower, you can use power chip, module, air intake, exhaust and spark plugs.

Upgrade Your Car’s Engine with a Performance Chip

Installation of a performance chip is relatively easy as it only requires to be plugged into the electrical system so it accepts validated data. Your car is capable of much more horsepower than you realize and remapping of the electronic control unit will only prove the same. Without overloading your vehicle any further, you will experience extra torque and power. You can program the power chips so you don’t have to deal with upgrading your engine entirely. But you need to buy one which is specific to your car’s make and year so you know it suits it best. Also you need to ensure that you are chipping a well-maintained car and not one which has not been maintained in years.

Performance Chips for More Power, Fuel Economy

Improperly tuned chips can affect the performance of your car negatively. That’s why it is important to consult and expert before you think of installing performance parts such as computer chips for car engine tuning. They will be able to tune it for higher BHP and torque based on the model and year. After installation you will notice that the car is easier to drive, quieter and responsive to your driving. Other performance parts which you can use are fuel ionizer, air intake supercharger, performance spark plugs and engine performance units which help track the car’s performance. A consultation with an automobile expert will help you determine the parts which will work best for your car.

For car enthusiasts who are always looking for options to upgrade their car for improved drivability, these chips are a great choice. Because the new technology allows for better engine performance while optimizing fuel mileage, many drivers serious about optimal performance choose to upgrade their car’s electronic systems.

Tech-Computer Inspired Wedding Favors

Maybe you met your partner on an online dating site, MySpace, Facebook or any of the social media sites available today. Or perhaps you and your sweetie are computer geeks, designers, programmers, technicians or bloggers. Possibly you met in the office, or maybe you work in the IT department together. Whatever the case, there are fabulous computer inspired, tech driven wedding favors just for you! Even if your not a “computer geek” these wedding favors are so in tune with our computer oriented lifestyle, that they will work for just about everyone.

For those who are a slave to the keyboard, how about “LOVE” keyboard magnets? Show everyone in your wedding that love is the key to happiness. Each set contains five magnets one of each of the following letters on the keyboard: L, O, V, E plus an “enter” key! The set is packaged in a clear plastic protective case and comes with a matching personalized label for the front.

Was your love, love at first byte? Then maybe Bride and Groom computer dusters will fit your wedding perfectly. Sweep your guests away with these adorable dusters, one white (bride) and one black (groom) with whimsical faces and retractable “hair” as the duster. These wedding dusters will be wonderful in your guests offices, at home or in the office.

If you both “just clicked” and knew each other was the one then why not give your guests the “We Clicked!” computer mouse pad wedding favors? Each eight inch round mouse pad features a pink “We Clicked” logo and a die cut arrow in the corner. These can be used as napkin holders for your reception, or as favor holders, by simply tying a ribbon through the die cut arrow.

Mobile Tech Computing Future

Who says innovation is dead in America? Every time I turn around I’m reading an article of another innovative entrepreneur in the personal technology space. And, the rapid increase in new innovations in mobile computing technologies is a bit overwhelming, and we have been inundated with new ideas and great concepts for over a decade. Many people thought that after Silicon Valley crashed, that was that. But now we see companies like Apple, Google, and others have been coming out with new innovations faster than anyone could have imagined.

There was a very interesting article in Forbes Small Business Magazine in April of 2005 titled “Cell Calls by Balloon? And Arizona Entrepreneurs Cheap Weather Balloons Are Replacing Expensive Telecom Satellites,” by Justin Martin of Chandler Arizona. In this article, a small business person was using a weather balloons with a device not larger than a 4 one-gallon milk container dangling from underneath.

It seems that rather than building and launching more mobile communication satellites costing millions of dollars, this gentleman could merely use inexpensive weather balloons, with all the equipment needed for next to nothing. Indeed it is an awesome system to solve a real problem, and his total cost for each unit is only $400. And “if he launched another Balloon every 12 hours, the annual cost would only be $300,000 total,” easily competing with the costs to put up a satellite and keep that system working.

Is this the future of mobile technology, would you one day be using your laptop, notebook, or perhaps your Tablet PC and hooking to the Internet via a cheap weather balloon – maybe. And you have full access to the Internet, mobile phone, texting, e-mails, and everything that your iPhone can do, anything you could ever care to do on a Tablet PC. It is indeed a brilliant concept, and if you’d like to look into this more, I recommend you look up this article on the Internet. Indeed I hope you please consider all this.

Tech Computer Logo Designs?

The sign of a well designed logo is that it is very easy to recall and the fonts that are used in the emblem play a big role there. It would not be an exaggeration to say that the logo fonts are as important as the design.

All the successful brands have crafted their monogram in such a way that they depict simplicity, distinctiveness and are memorable.

The following list consists of the font types that some of the popular tech computer logo brands have used which has made a major contribution in making their brand marks distinct, classy and memorable.

In most cases, you will notice that the type face used is straight and easily readable. That is because straight fonts give an impression of professionalism and proficiency while curvy fonts depict imagination and informality.

1. Clarendon Bold Expanded for Sony:

This is one of the simplest emblems to read and has a great recall rate. The font type is used in bold and expanded structure which makes the design unique while the neat edges of the text give it an air of proficiency. You look at this design and know that this company means business and is here to stay.

2. Masque for Compaq:

This famous logo is used in bright red color which makes it eye catching. The fonts used are sharp edged and clean cut which represent class and are timeless. Overall, this design looks high tech and skilled.

3. City Medium for IBM:

Not only the fonts but also the way these fonts are crafted is what makes this design unique. The use of thick City Medium fonts makes this emblem hard to miss while the prominent edges give a sophisticated look to the design.

4. Denda New for Canon:

This emblem looks sophisticated and skilled but the softer edges give a more playful appeal to the design. The red color also plays a major role in making this design stand out from the crowd. Overall, this monogram is classy, energetic and attractive.

5. Helvetica for Panasonic:

The fonts used for this famous corporation are simple and generic but they still look outstanding due to its alignment and colors. The combination of blue and white give it an urbane feeling while the thickness and easy understandability of the fonts make it easily memorable.

6. Helvetica 96 for Microsoft:

This company has used these fonts in a thick and black and white style which adds simplicity and sophistication to the design. The sharp cut edges give a very clean look to the design while the slightly slanted alignments give it a little imagination. This design has also served as a popular choice for computer logo wallpaper.