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Микроэлектроника: настоящее и будущее

Раздел 4. Второе занятие

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ВТОРОЕ ЗАНЯТИЕ

Работа в аудитории

1.        Проверьте домашнее задание.

Проверьте письменный перевод второй части основного текста (II). Проверьте выборочно упражнения. Проверьте, как вы запомнили слова (выборочно). Проверьте устное изложение первой части основного текста (I).

2.        Учитесь переводить.

Текст 4.1В

Переведите текст устно (с листа) без словаря. Значение выделенных слов вы смо­жете понять из контекста.

Вариант 1

The Heart of the Computer

The processor is the brains of the computer, the location of those fantastically small circuits. Think of it as an overworked adding ma­chine that also can make simple logic decisions.

It can decide that two numbers are equal or not equal, that a cer­tain condition does or does not exist in the circuitry. It can decide that things are true or false based on rules the programmer supplies to make that decision. This, combined with the ability to add and subtract at lightning-fast speeds and store the results of these processes, allows the programmer to give step-by-step instructions to be carried out on command.

Вариант 2

Old and New Concepts

Although the idea of an automatic computing engine occurred first to Charles Babbage in 1832, it was more than a century later, in 1945,

that John von Neumann set out the principles that were to fix the pat­tern of computer design for the next twenty years. Most of today's com­puters follow the von Neumann model, and probably many of tomor­row's will do so also. In particular, they have a rather rigidly organized store, holding both instructions and data; and, although some overlap of operations occurs, in general they tiptoe through their programs in mini-steps. There can be no doubt that computers of this kind are powerful, versatile tools; but it would be surprising indeed if one type of machine were to prove equally suitable for all types of problems; and it may be that some problems of practical interest to us are too difficult, or too expensive, to solve on von Neumann machines.

Текст 4.2 В

Переведите текст письменно со словарем. Время перевода — 20 минут. Проверьте перевод в аудитории.

Personal Computer

The first personal computer (PC) was put on the market in 1975.

Today the personal computer can serve as a work station for the individual. Moreover, just as it has become financially feasible to provide a computer for the individual worker, so also technical developments have made the interface between man and machine increasingly "friendly", so that a wide array of computer functions are now accessible to people with no technical background.

A personal computer is a small computer based on a micropro­cessor; it is a microcomputer. Not all microcomputers, however, are personal computers. A microcomputer can be dedicated to a single task such as controlling a machine tool or metering the injection of fuel into an automobile engine; it can be a word processor, a video game or a "pocket computer" that is not quite a computer. A person­al computer is something different: a stand-alone computer that puts a wide array of capabilities at the disposal of an individual.

The first generation of true personal computers, which came on the market between 1977 and 1981, had eight-bit microproces­sor chips available, and soon they were included in complete com­puter systems. As for clock frequency, the trend has been from one

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