High-Q | English פסיכומטרי

Unit 1

17. The last paragraph -

(1) describes essential changes in Go (2) defines the size of the board as an essential parameter (3) describes a minor change introduced to the game of Go (4) justifies the claim that Go is a simple game

הפסקה האחרונה מתייחסת לשינוי בגודל לוח המשחק , ומציינת כי הדבר לא השפיע כלל על אופיו.

Text II

An analog computer is a device that solves problems by measuring a continuously varying quantity, such as weight, speed, or voltage. Many familiar devices, including speedometers and thermometers, work as analog computers. Analog computers once performed much of the world's calculations. They reached the peak of their popularity in the 1940s. During World War II (1939-1945), they were used to work out the paths of 5 bombs and bullets. The development of digital computers since the war has limited the use of analog computers. A digital computer uses numerical digits that represent a quantity, rather than measuring quantities directly. Most computers today are digital. An analog computer replaces the digital calculation with a physical system that performs the calculation. For example, the rise and fall of mercury in a thermometer 10 imitates the movement of the temperature. An electronic analog computer represents numbers with electrical quantities, especially voltages. It manipulates voltages much as a slide rule manipulates lengths. Electronic analog computers are useful for representing quantities and processes that vary continuously. They are also well-suited for building models that simulate (duplicate) the behavior of systems. For example, computer 15 simulations reproduce the motion of aircraft, spacecraft, and oceangoing ships under various conditions. They are used to test a craft's performance or train its crew. Certain limitations make it difficult for analog computers to compete with digital computers. Although analog computers can be extremely fast, they are not as accurate as digital computers. This is mainly because analog computers work with varying quantities 20 that cannot be measured precisely. Digital computers count rather than measure, and so their accuracy is limited only by the number of digits they can handle. In addition, digital computers are more versatile than analog computers. Most analog computers are set up to solve only one kind of problem and must be rewired to solve other problems. Devices called 'hybrid computers' combine the speed of analog computers and the accuracy of 25 digital computers.

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