Аппаратное обеспечение ввода
Назначение оборудования ввода - сбор данных и их преобразование в форму, подходящую для компьютерной обработки. Наиболее распространенным устройством ввода является клавиатура. Это очень похоже на пишущую машинку.
Мышь представляет собой портативное устройство, подключенное к компьютеру с помощью небольшого кабеля. При наведении курсора мыши на коврик для мыши курсор перемещается по экрану. Когда курсор достигает нужного места, пользователь обычно нажимает кнопку мыши один или два раза, чтобы сообщить о выборе меню или команде компьютеру.
Световое перо использует светочувствительный фотоэлемент для сигнализации положения экрана на компьютере. Другим типом оборудования ввода является оптико-электронный сканер, который используется для ввода графики, а также набора символов. Микрофон и видеокамера также могут быть использованы для ввода данных в компьютер. Электронные камеры становятся очень популярными среди потребителей за их относительно низкую цену и удобство.
Вопросы:
1) Какова цель ввода оборудования?
2) Какие примеры оборудования ввода?
3) Что такое мышь? Что такое световое перо?
1 часть -Chocolate
"The fact that you love, eat a little."
Improvement of health, perceived by people in the use of chocolate and sweets, leads to the fact that many eating sweets when they feel a decrease in vitality. However, the problem is that relying on a means of sweetness as practically instantaneously increases blood sugar levels can easily be made a permanent part of their diet. Basically candies are a source of empty calories and reduce appetite required to obtain useful products.
Of course, chocolate brings some advantage, but it contains a large amount of fat, and its use in excessive quantities can lead to an increase in weight. This does not mean that sweets are harmful to health. They simply need to eat as a delicacy, moderately and not to replace them other, more useful products. It is believed that the chocolate promotes endorphin and serotonin levels in the brain, which leads to an effect of elation.
The composition of chocolate includes stimulants such as caffeine and theobromine (this is an isolated and studied 125 years ago, Russian chemist AA Resurrection, alkaloids, and in small doses, he, like caffeine, a stimulant effect on the cardiovascular and nervous system . In chocolate usually contains about 0.4 percent of theobromine - dose completely safe, but gives the chocolate ability to relieve fatigue, vigor return), reinforcing the feeling of anxiety. Some people find soothing eating chocolate, so chocolate is associated with childhood they comfort or reward. On the influence of chocolate on the heart.
What are the ingredients of chocolate? First, caffeine, which promotes increased heart rate (tachycardia) and a slight increase in blood pressure, so people who have had a heart attack, it is recommended to reduce the consumption of chocolate (125-gram bar of chocolate contains more caffeine than a cup of instant coffee). Secondly, sugar, though it has repeatedly undertaken study of the relationship between high sugar consumption and an increased risk of developing heart disease, scientific evidence they have not received. And finally, thirdly, the chocolate contains minerals such as iron, magnesium and potassium: Iron deficiency can cause symptoms such as shortness of heartbeat and it (iron) is necessary for synthesis of hemoglobin; magnesium - plays a significant role in the transmission of nerve impulses and is important for the smooth operation of the heart muscle; taken together with potassium sodium responsible for water and electrolyte balance in cells and tissues, which affects blood pressure and is important for maintaining normal heart rate.<span>
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<span>1) Were the boys watching a
football match at 8p.m yesterday? – общий </span><span>
2) Where were the boys
watching a football match at 8p.m yesterday? - специальный</span><span>3) Were the boys watching a
football or hockey match at 8p.m yesterday? – альтернативный</span><span>
4) The boys were watching a
football match at 8 p.m yesterday, weren’t they? - разделительный</span><span>
5) Who was watching a
football? – специальный вопрос к подлежащему</span>
16. I saw Jim this morning. He was running for the bus.
17. Keri was angry. She had been waiting for Sarah for two hours.
18. Andy was relieved to hear that he had passed the exam.
19 I was walking home when I saw Paul.
20Brian learnt how to spell his name at school today.
21 They hadn’t visited their grandparents for a long time.
23 I was watching television when the telephone rang. 8. Jason had been thinking about his new car all day.
24 I bought the dress because I wanted something special to wear to the party.
25. The little boy was crying because he had lost his mother.
26. Graham had been working for the company for twenty years before he retired.
27. Pam opened the present and read the card.
28 Lucy wrote a letter to her sister last night.
29. It had been raining all day and the roads were very wet.
30. Sue was smiling as she was reading Mary’s letter.
<span>Some people live in the middle of Australia</span>