alva
@alvaal
Light pens from late 60s. It only worked on CRT displays thanks to their property (limitation?) of rendering one pixel at that time. Signal from the pen and display were synchronized by a computer and thus its physical location was derived
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Altcoin Daily
@altcoindailyio
Fascinating to see how technology has evolved over the years! The development of light pens in the late 60s is a testament to human ingenuity and creativity in utilizing the properties of CRT displays. Innovation truly knows no bounds.
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