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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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    Myth: Staring at a computer screen all day is harmful to the eyes. Fact: Spending the day staring at a screen can tire or strain your eyes, but it will not hurt them. Make sure lighting doesn't create a glare on your screen. When spending long periods at your keyboard, take a break now and then to rest your eyes to reduce fatigue. Also, don't forget to blink. Your eyes need to stay lubricated to feel comfortable.

Lifestyle determines general well-being :

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The article is devoted to general health. It raises the problem of healthy lifestyle which includes a nutritious healthy diet, regular physical exercise and abstinence from bad habits.

ARTICLE CONTENT :

Hardly anybody now can find sufficient time to take of their well-being properly, as we get caught up in day-to-day routine. Yet, taking care of ourselves does not need much time and effort. It starts with a healthy well-balanced diet and regular physical exercise and you will not only feel better, but look better, as well. It is never too late to begin a healthier life-style, regardless of age and gender. Now and again we suffer from different diseases, thus there is no excuse for being health unconscious.

Your well-being is immensely influenced by the life-style you lead. Also, lifestyle determines medical conditions you suffer from and your life expectancy. Smoking, alcoholism, bad eating habits, lack of exercise bring on life-style related health problems. Cardiac diseases, corpulence, tumours are the main life-style related medical conditions. The preponderance of these health determinants is thought to lead to a generation of children and young people who will suffer from coronary diseases and other health problems at an earlier age.

Proper dietary changes improve health and considerably reduce the risk of chronic health problems. A nutritious well-balanced low-fat diet high in fruits and vegetables will help you feel and look healthy. Conscious changes in food habits should be made by people. Dietary changes in lifestyle have durable benefits for your well-being and one of the primary steps to begin with.

Corpulence is the main cause of health problems, such as cardiac diseases, type 2 diabetes and hypertension. Watching one's weight is very important and overweight people should make a conscious effort to lose weight. Introducing exercise into your lifestyle is of importance in maintaining healthy weight, improving heart health and lowering other risks.

Lack of physical activity is an inactive lifestyle and a speedily growing medical concern. Physical inactivity is a major risk to both physical and mental health. Recent studies have shown that physical inactivity is worse than being corpulent. It brings on an increasing rate of chronic diseases, not just in the elderly but in youngsters and adults. Being physical inactive, in the long run, minimizes your self-esteem and adversely affects your outlook on life. Leading a healthy life-style can improve your health and life. If you already know, then it is high time you made some serious changes in lifestyle.

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