Вопрос № 237511 - Английский язык

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Integrated circuits can be classified into analog, digital and mixed signal (both analog and digital on the same chip).
Digital integrated 1_______ can contain something from one to millions of logic gates, flip-flops, multiplexers, and other circuits in a few square millimeters. A small size of these circuits 2_______ high speed, low power dissipation and reduced manufacturing cost.
Analog ICs, such as sensors, power management circuits, and operational amplifiers, work by processing continuous signals. They perform 3_______ like amplification, active filtering, demodulation, mixing, etc.
ICs can also combine analog and digital circuits on a single chip to create functions such as A/D converters and D/A converters. Such circuits offer smaller size and 4_______ cost.

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Mixing small wires with enlarged ends into concrete increases the material’s strength and hardness, according to research performed at the National laboratory, Los Alamos, New Mexico.
Researchers found that when bone-shaped wires 25 mm long were added in amounts equal to just 1 percent of the concrete’s volume, the strength increased by as much as 84 percent. The concrete was also 93 times harder.
Straight steel wires have been used to reinforce concrete for several decades. But wires of this kind bond only weakly with the concrete at their ends. Besides, it turned out that straight wires can also snap under high stress without much bending or stretching. In stress tests concrete containing the wires with bulbous ends became even stronger after the first cracks appeared as the load was transferred to the wires.
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Straight steel wires have been used _______.

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