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    HAND-HELD CALCULATOR
    February 1, 1972 - United States

    The first scientific hand-held calculator was introduced for $395 by Hewlett- Packard, named the HP-35 for having 35 keys. It was the first hand-held calculator able to perform logarithmic and trigonometric functions with one keystroke. The red LED display could give scientific notation up to 10 digits mantissa and 2 digits exponent. The price was reduced several times, eventually to $195. By Feb 1975 (when production of the model was discontinued), 300,000 had been sold. The numbers and functions for calculations were entered in “Reverse Polish Notation”(RPN), which used an “ENTER” key but needed no parentheses or “=” key. It ran on rechargeable batteries and had electronics with several integrated circuits in a 79 ×147×34 mm (3.1" x 5.8" x 1.4") case.

    OBAMA SHUTS DOWN THE MOON PROJECT
    February 1, 2010 - United States

    Barack Obama has canceled NASA's plans for taking men to the Moon. The Constellation program had been looking at new rockets and a crewship to put astronauts on the lunar surface by 2020. In the 2011 budget request that was issued on Monday, February 1st, Obama has said that the project is too costly, 'behind schedule, and lacking in innovation.'

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  • Until a man duplicates a blade of grass
    by Earth Day, Thomas Alva Edison Inventor

    "...Until a man duplicates a blade of grass, Nature can laugh at his so-called scientific knowledge. Remedies from chemicals will never stand in favorable comparison with the products of Nature, the living cell of a plant, the final result of the rays of the sun, the mother of all life...."
  • Rules for Happiness
    by Immanuel Kant

    "...Rules for Happiness: Something to do, Someone to love, Something to hope for...."

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  • Salary
    about Steve Jobs

    Steve Jobs' annual salary was $1, just enough to keep company health benefits. Cancer Facts & Figures
    about Besides Lung Cancer

    Besides lung cancer, tobacco use also increases the risk for cancers of the mouth, lips, nasal cavity (nose) and sinuses, larynx (voice box), pharynx (throat), esophagus (swallowing tube), stomach, pancreas, kidney, bladder, uterus, cervix, colon/rectum, ovary (mucinous), and acute myeloid leukemia.

Download Your Favorite Music Online :

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ARTICLE INFORMATION :

The article concentrates upon digital music downloads, in particular online music download options, including the cost, the listening rights, audio format and quality of downloads.

ARTICLE CONTENT :

There are a great many online services that offer online music. Some sites charge per online music download, whereas other services offer to pay a monthly fee for a limitless number of music downloads. It has been estimated that compact disc sales are in decline (19% in the last few years), and online music download sales are speedily increasing. Revenues from digital music sales are reported to have virtually tripled last year, with Apple's iTunes accounting for more than 85 percent of single song downloads. Nevertheless, the figures do not make Apple the sole source of digital music. Today, legal music download sites account for approximately 6% of record studios' revenues, which is a growth compared to the situation observed a couple of years ago.

Music download sites come in two types: 'rent' and 'buy' websites. 'Rent' sites are music sites involving a monthly fee paid to gain access to the whole music catalogue. 'Buy' services charge per download - iTunes, for example - where a soundtrack can be burned onto a CD once it is paid for. The CD can then be ripped to the pc. Some digital music services offer to pay a monthly fee for limitless listening rights, but also charge to purchase a song. Some digital music download sites charge 9 cents per track. In addition, these sites have tracks that can be downloaded in any format and quality level.

Sometimes music download websites are so cheap and user-friendly that a great many Internet users decide to download songs from these websites instead of ripping CD collections onto the personal computer. For any person downloading songs onto an iPod or iTunes, it is probably the optimum option. For any music not being downloaded onto an iPod, any other music source will work. When seeking the optimum quality music downloads, one should look for music download websites offering the largest choice of music that is updated on a regular basis, and excellent quality downloads. Commonly, the price is directly dependent on quality. In this case, a question arises: Is it worth spending extra money? The answer is typically 'Yes'.

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