Final answer:
Explanation of light pen, raw facts, and the first counting device in computing and technology.
Explanation:
1) Light Pen:
A light pen is an input device that allows users to point directly to a specific spot on the screen. It captures the light emitted by the screen when the pen touches it, enabling interaction with the computer. An example is using a light pen to draw directly on a graphics design software.
2) Raw Facts:
Raw facts are called data. Data refers to unprocessed information that lacks context or relevance. For instance, temperatures recorded at different times without any analysis or interpretation are considered raw facts or data.
3) First Counting Device:
The abacus is considered the first counting device. It is an ancient tool used for mathematical calculations by sliding beads on rods. The abacus allowed users to perform addition, subtraction, multiplication, and division.
Learn more about Computer input devices, data processing, early counting tools here:
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