Palm's Pre Smartphone

Palm's Pre smartphone is unusual in that it slides vertically to reveal the QWERTY keyboard. It uses the same curved sliding action found on phones like the Sony Ericsson Xperia X1. The vertical keyboard was used partially to stand out from other phones, and partially to adhere to the philosophy of easy one-handed use. The phone has a multitouch screen and, when the keyboard is hidden, just three physical controls: A top button, a side volume rocker, clickable button at the bottom. It also has a 3.5mm headphone jack, 3MP camera on the back (w/LED flash) all in a 4.8-ounce package. It's smaller than the iPhone in surface area, but it's noticeably thicker—even thicker than the BB Bold.

Gesture Area

The gesture area is the black space that extends below the screen of the Pre. Like the screen itself, that area is fully multitouch-capable, and allows you to perform various gesture-based actions within WebOS. Palm said they implemented the gesture area because they feel one-handed control directly on the touchscreen itself can be difficult at times. They say the gesture area will make it easier to move through WebOS without the need for a second hand.
• Linux-based Palm-built WebOS operating system and UI
• 3.1-inch, 320x480 capacitive LCD multitouch screen
• Vertical slider form factor with full QWERTY keyboard
• 8GB flash storage
• Multitouch gesture area and scrollball
• 3G EV-DO rev. A and wi-fi
• Bluetooth and GPS
• 3.5mm headphone jack
• 3-Megapixel camera
• LED flash
• Micro USB connection with mass storage support
• Wireless induction charger
• 4.8 Ounces

History of Computer

Nearly 5,000 years ago the abacus emerged in Asia Minor. The abacus may be considered the first computer. This device allowed its users to make computations using a system of sliding beads arranged on a rack. Early shopkeepers used the abacus to keep up with transactions. The use of pencil and paper spread, the abacus lost its importance. Nearly twelve centuries past before the next important advance in computing devices emerged.

In 1642, Blaise Pascal, the 18-year-old son of a French tax collector, invented what he called a numerical wheel calculator to help his father with his duties. The Pascaline, a brass rectangular box, used eight movable dials to add sums up to eight figures long. Pascal's device used a base of ten to achieve this. The disadvantage to the Pascaline, of course, was its limitation to addition. In 1694, Gottfried Wilhem von Leibniza a German mathematician and philosopher improved the Pascaline by creating a machine that could also multiply. Like its predecessor, Leibniz's mechanical multiplier worked by a system of gears and dials.

It wasn't until 1820, however, that mechanical calculators gained widespread use. A Frenchman, Charles Xavier Thomas de Colmar, invented a machine that could perform the four basic mathematic functions. The arithometer, presented a more systematic approach to computing because it could add, subtract, multiply and divide. With its enhanced versatility, the arithometer was widely used up until World War I.

The real beginnings of computers began with an English mathematics professor, Charles Babbage. Babbage's steam-powered Engine, outlined the basic elements of a modern general purpose computer and was a breakthrough concept. The Analytical Engine consisted of over 50,000 components. The basic design of included input devices in the form of perforated cards containing operating instructions and a "store" for memory of 1,000 numbers of up to 50 decimal digits long.

In 1889, an American inventor, Herman Hollerith, created a machine that used cards to store data information which was fed into a machine and compiled the results mechanically. Each punch on a card represented one number, and combinations of two punches represented one letter. As many as 80 variables could be stored on a single card. Hollerith brought his punch card reader into the business world, founding Tabulating Machine Company in 1896, later to become International Business Machines (IBM) in 1924 after a series of mergers. Other companies also manufactured punch readers for business use. Both business and government used punch cards for data processing until the 1960's.

When World War II began, the governments sought to develop computers to accomplishment their potential strategic importance. This increased funding for computer development projects and hastened technical progress. In 1941, a German engineer Konrad Zuse had developed a computer to design airplanes and missiles. The Allied forces, however, made greater strides in developing powerful computers. American efforts produced a broader achievement. In 1933, Howard H. Aiken, a Harvard engineer working with IBM, succeeded in producing an all-electronic calculator. The purpose of the computer was to create ballistic charts for the U.S. Navy. It was about half as long as a football field and contained about 500 miles of wiring. It used electromagnetic signals to move mechanical parts. The machine was slow taking 3-5 seconds per calculation and inflexible in that sequences of calculations could not change; but it could perform basic arithmetic as well as more complex equations.

Another computer development spurred by the war was the Electronic Numerical Integrator and Computer (ENIAC). It consisted of 18,000 vacuum tubes, 70,000 resistors and 5 million soldered joints, the computer was such a massive piece of machinery that it consumed 160 kilowatts of electrical power. ENIAC was developed by John Presper Eckert and John W. Mauchl. ENIAC was a general-purpose computer.

In 1945, Von Neumann designed the Electronic Discrete Variable Automatic Computer (EDVAC) with a memory to hold both a stored program as well as data. This "stored memory" technique as well as the "conditional control transfer," that allowed the computer to be stopped at any point and then resumed, allowed for greater versatility in computer programming. The key element to the von Neumann architecture was the central processing unit, which allowed all computer functions to be coordinated through a single source. In 1951, the UNIVAC I (Universal Automatic Computer), built by Remington Rand, became one of the first commercially available computers to take advantage of these advances. The first computers were characterized by the fact that operating instructions were made-to-order for the specific task for which the computer was to be used. Each computer had a different binary-coded program called a machine language that told it how to operate. This made the computer difficult to program and limited its versatility and speed. Other unique features of first computers were the use of vacuum tubes and magnetic drums for data storage.

The invention of the transistor greatly changed the computer's development in 1948. The transistor replaced the large, cumbersome vacuum tubes. The transistor was at work in the computer by 1956. Throughout the early 1960's, there were a number of commercially successful computers used in business, universities, and government from companies such as Burroughs, Honeywell, IBM, and others. These computers also contained transistors in place of vacuum tubes. They also contained all the components we associate with the modern day computer: printers, disk storage, memory, tape storage, operating systems, and stored programs.

By 1965, most large business routinely processed financial information using computers. It was the stored program and programming language that gave computers the flexibility to finally be cost effective and productive for business use. Though transistors were clearly an improvement over the vacuum tube, they still generated a great deal of heat, which damaged the computer's sensitive internal parts. Jack Kilby, an engineer with Texas Instruments, developed the integrated circuit in 1958. The IC combined three electronic components onto a small silicon disc, which was made from quartz. Scientists later managed to fit even more components on a single chip, called a semiconductor.

By the 1980's, very large scale integration squeezed hundreds of thousands of components onto a chip. Ultra-large scale integration increased that number into the millions. The ability to fit so much onto an area about half the size of a dime helped diminish the size and price of computers. It also increased their power, efficiency and reliability. By the mid-1970's, computer manufacturers sought to bring computers to general consumers. These minicomputers came complete with user-friendly software packages that offered even non-technical users an arrangement of applications, most popularly word processing and spreadsheet programs.

In 1981, IBM introduced its personal computer (PC) for use in the home, office and schools. The 1980's saw an expansion in computer use in all three arenas as clones of the IBM PC made the personal computer even more affordable. The number of personal computers in use more than doubled from 2 million in 1981 to 5.5 million in 1982. Ten years later, 65 million PCs were being used. As computers became more widespread in the workplace, new ways to harness their potential developed. As smaller computers became more powerful, they could be linked together, or networked, to share memory space, software, information and communicate with each other. Computers continue to grow smaller and more powerful.

Next Generation of Computer Displays

Computer displays have been remarkably resistant to the advances that have affected the rest of computer technology. For example, in 1982 the original IBM PC had a 16-bit processor running at 4.77 MHz. Today's processors are about 1,000 faster. Today's monitors, on the other hand, are still small glass rectangles. No major advances have occurred.

The next generation in computer display, a new technology from Elumens that completely revolutionizes the visualization of digital information. In areas such as space design and simulation (flight, driving or battlefield simulation), this new display completely changes the way you interact with the digital environment!

On the right see Photo of The VisionStation has a large parabolic shell that is used to display the image projected by the wide-angle lens. (Photo courtesy Elumens Corporation)

A North Carolina-based company, Elumens, has designed a display system that takes peripheral vision into account. The VisionStation consists of a large, curved surface (reminiscent of a large satellite dish), a high-resolution data projector and a wide-angle projection lens.

The result is a display that shows you a very wide field of view, up to a full 180 degrees. An Elumens display takes over your entire visual field, including your peripheral vision. You see not only what is in front of you, but everything above, below, left and right. When you want to see what is "beside" you, you simply turn your head and look. For example, in a driving simulator, you can look out both side windows by turning your head just like you would in a real car.

The experience when watching an Elumens display is very interesting. Because it uses your peripheral vision, the sense of motion is very real. Turning your head to look at objects is very natural. Because the screen is completely smooth, there are no distractions.

Key benefits of the VisionStation are:

- It provides an immersive experience.
- It does not require cumbersome head gear for virtual environment.
- It accommodates both real and computer-generated 3-D data.
- It can be set up by two people in about two hours (three to four hours with the Optional LightShell enclosure).
- It is portable.
- It is highly scalable.
- It is as simple to operate as a traditional monitor.
- It can be used for a variety of applications.
- It accommodates a large portion of existing 3-D applications without special porting
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Tips To Make Your PC Run Faster

Remove Malicious Programs

It is important that you use up-to-date security software to detect and remove malicious programs. Virus programs can slow down your PC and cause unwanted behaviour, even damage to your data.

Spyware tracks your movements on the Web for advertising purposes, but can affect your PC's performance as well. Use anti-spyware programs to remove it.

Clear Out Junk Files

Any time you visit a web site, your computer needs to download the page along with any pictures displayed on it. To prevent your computer having to download the same files again each time you visit the same web site, your web browser will keep a "cache" of stored files it will retrieve if the site hasn't changed since your last visit. Although this means web pages appear faster, over time your cache can eat up a lot of disk space and slow your PC down.

Whenever you delete a file, it is moved to the Recycle Bin first, to give you the chance to change your mind. But the Recycle Bin uses disk space too, so if you leave lots of files in there you are wasting precious space.

Windows 7

Microsoft can do better than Windows Vista.
And with Windows 7—expected sometime before the year is up.
Whether it's the new features or the less taxing system requirements, Windows 7 promises to be a vast improvement on Vista, and hopefully enough to coax most of us still clutching XP for dear life to finally upgrade.

Monitor the temperature of CPU

Core Temp is a software that helps you keep checking the temperature of CPU.

The unique point of Core Temp is that it can have separate monitor to check the temperature of separate CPU. As such, if you are using Duo Core CPU, you will then be provided with two meters of temperature.

It can also enable you to know the real-time changes of temperature too. Of course, graphical representation to users is also available.

What is an Operating System

The operating system is the core software component of your computer. It performs many functions and is, in very basic terms, an interface between your computer and the outside world. In the section about hardware, a computer is described as consisting of several component parts including your monitor, keyboard, mouse, and other parts. The operating system provides an interface to these parts using what is referred to as "drivers". This is why sometimes when you install a new printer or other piece of hardware, your system will ask you to install more software called a driver.

What does a driver do?.

A driver is a specially written program which understands the operation of the device it interfaces to, such as a printer, video card, sound card or CD ROM drive. It translates commands from the operating system or user into commands understood by the the component computer part it interfaces with. It also translates responses from the component computer part back to responses that can be understood by the operating system, application program, or user. The below diagram gives a graphical depiction of the interfaces between the operating system and the computer component..


Causes of a slow PC

There are many possible causes of a slow PC. Because your computer is constantly working with files - moving, copying and deleting from place to place - it will eventually get cluttered with leftover files, some of which are not needed and just take up valuable disk space. You only have a certain amount of disk space available on your hard disk, and as it fills up the computer can begin to struggle to find room to perform its tasks.

If your PC crashes or freezes up, it may be a symptom of a slow or cluttered PC.

The brain of your computer is the Processor, and it may be that your processor is too slow to run today's demanding software. The processor can also struggle if you have multiple programs running at once - for example, if you have Word open to compose a letter while downloading a file from the Internet and also operating another application through your media player.

RAM is the temporary memory the computer uses to do its calculations. If you do not have enough RAM, your programs will run slowly.

Other components of your PC can contribute to poor performance, particularly your Graphics Card when it comes to running media and games software. Some hardware needs special programs called Drivers and these need to be kept up to date.

You may also have programs running in the background using up memory that you are unaware of, and in some cases, the problem may be a malicious program such as a virus or spyware.

How To Use Your PC Mouse

The Mouse is the device you will use for most of your interactions with your PC. It is primarily used to move the pointer arrow around the screen and to select and activate options.

The mouse buttons are used to interact with whatever is on the screen where the pointer is located. The left mouse button is the one you will use most often. Clicking this tells the PC to select an item and is called 'left-clicking'. To activate an item and use it, you will often need to click the button twice or 'double-click'.

If you click and hold the left button and move the mouse, this has the effect of 'dragging' a selected object about the screen until you release the button.

Left-clicking on text in a document will place a flashing cursor at that point, which allows you to begin typing there.

The right mouse button is usually used to bring up a small menu window that gives options specific to the selected object. To use a particular option you just left-click it.Common right-click menu options for an object include: Open (activate, same as if you double-click), Cut (remove to be placed elsewhere), Copy (make a copy of this object) , Create Shortcut (create a shortcut link elsewhere to give quick access to this object), Delete (remove permanently), Rename (give a new name), and Properties (find out information).

You may have a third smaller button in the center of your mouse that can be rolled forwards and backwards. This mouse-wheel can be used to move up and down through documents.