С! text у. the first calculating devices let us take a look at the history of computers that we know today. the very first calculating device used was the ten fingers of a man's hands. this, in fact, is why today we still count in tens and multiples of tens. then the abacus was invented. people went on using some form of abacus well into the 16th century, and it is still being used in some parts of the world because it can be understood without knowing how to read. during the 17th and i8lh centuries many people tried to find easy ways of calculating. j.napier, a scotsman, invented a mechanical way of multiplying and dividing, which is now the modern slide rale works. henry briggs used napier's ideas to • produce logarithm tables which all mathematicians use today. calculus, another branch of mathematics, was independently invented by both sir isaak newton, an englishman, and leibnitz, a german mathematician. the first real calculating machine appeared in 1820 as the result of several people's experi- ments. in 1830 charles babbage, a gifted english mathematician, proposed to build a general-purposeproblem-solvingmachine that he called "the analytical engine". this machine, which babbage showed at the paris exhibition in 1855, was an attempt to cut out the human being altogether, except for providing the machine with the necessary facts about the problem to be solved. he never finished this work, but many of his ideas were the basis for building today's computers. by the early part of the twentieth century electromechanical machines had been developed and were used for business data processing. dr. herman hollerith, a young statistician from the us census bureau successfully tabulated the 1890 census. hollerith invented a means of coding the data by punching holes into cards. he built one machine to punch the holes and others — to tabulate the collected data. later hollerith left the census bureau and established his own tabulating machine company. through a series of merges the company eventually became the ibm corporation. until the middle of the twentieth century machines designed to manipulate punched card data were widely used for business data processing. these early electromechanical data processors were called unit record machines because each punched card contained a unit of data. in the mid—1940selectronic computers were developed to perform calculations for military and scientific purposes. by the end of the 1960s commercial models of these computers were widely used for both scientific computation and business data processing. initially these computers accepted their input data from punched cards. by the late 1970s punched cards had been almost universally replaced by keyboard terminals. since that . time advances in science have led to the proliferation of computers throughout our society, and the past is but the prologue that gives us a glimpse of the nature. 3.просмотрите текст еще раз. ответьте на вопросы, используя информацию текста. 1.what was the very first calculating device? 2. what is the abacus? 3. what is the modern slide rule? 4. who gave the ideas for producing logarithm tables? 5. how did newton and leibnitz contribute to the problem of calculation? 6. when did the first calculating machine appear? 7. what was the main idea of . ch.babbage's machine? 8. how did electromechanical machines appear and what were they used for? 9. what means of 33 unit 3. history of computers coding the data did hollerith devise? 10. how were those electromechanical machines called and why? 11. what kind of computers appeared later? 12. what new had the computers of 1970s?

269

453

Посмотреть ответы 2

Ответы на вопрос:

Саша007228666

Английский язык

4,5(95 оценок)

1) the ten fingers of a man hand's. 2) доска для вычислений. 3) a mechanical way of multiplying and dividing, which is now the modern slide rale works 4) napier. 5)independently invented by both sir isaak newton, an englishman, and leibnitz 6) 1820 7) attempt to cut out the human being altogether, except for providing the machine with the necessary facts about the problem to be solved. 8) electromechanical machines had been developed and were used for business data processing 9) hollerith invented a means of coding the data by punching holes into cards. 10) were called unit record machines because each punched card contained a unit of data. 11) electronic computers were developed to perform calculations for military and scientific purposes 12) by the late 1970s punched cards had been almost universally replaced by keyboard terminals. since that

angel150301

Английский язык

4,4(53 оценок)

Красивый, опасный, далеко

Объяснение:

Быстрый, поместиться, дружелюбный, весёлый, хороший

Реши свою проблему, спроси otvet5GPT

Быстро
Мгновенный ответ на твой вопрос
Точно
Бот обладает знаниями во всех сферах
Бесплатно
Задай вопрос и получи ответ бесплатно

Задай свой вопрос

Популярно: Английский язык

Есть вопросы?

Как otvet5GPT работает?

otvet5GPT использует большую языковую модель вместе с базой данных GPT для обеспечения высококачественных образовательных результатов. otvet5GPT действует как доступный академический ресурс вне класса.
Сколько это стоит?

Проект находиться на стадии тестирования и все услуги бесплатны.
Могу ли я использовать otvet5GPT в школе?

Конечно! Нейросеть может помочь вам делать конспекты лекций, придумывать идеи в классе и многое другое!
В чем отличия от ChatGPT?

otvet5GPT черпает академические источники из собственной базы данных и предназначен специально для студентов. otvet5GPT также адаптируется к вашему стилю письма, предоставляя ряд образовательных инструментов, предназначенных для улучшения обучения.