COMPUTER HISTORY AND EVOLUTION
EARLY COMPUTING DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It showed the current weather state
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Sent signals to soldiers during the war
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Allowed people to receive signals from other countries.
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Enables ships to calculate their latitude at sea.
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Detailed explanation-1: -The astrolabe was used to determine latitude by measuring the angle between the horizon and Polaris, also called the North Star, the Pole Star, or Stella Maris (Star of the Sea).
Detailed explanation-2: -How was a mariner’s astrolabe used? The instrument was used to help determine the ship’s latitude from the height of the Pole Star or of the sun. At night, the Pole Star was sighted directly through small pinholes in the two vanes mounted on the pivoting alidade or rule.
Detailed explanation-3: -Astrolabe. The astrolabe was an inclinometer used to determine the latitude of a ship at sea by measuring the sun’s noon altitude (declination) or the meridian altitude of a star of known declination.
Detailed explanation-4: -sextant, instrument for determining the angle between the horizon and a celestial body such as the Sun, the Moon, or a star, used in celestial navigation to determine latitude and longitude.
Detailed explanation-5: -Astrolabes are simple yet powerful astronomical devices used for the purpose of observations, analog calculations and reckoning time. They were also used to measure altitudes of celestial bodies, allowing astronomers to identify the sun’s position and the location of other heavenly bodies.