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Printer technology has developed greatly since 1920, from mechanical printers to laser and 3D printers, offering the opportunity to produce on different materials.

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A projector is a device that effectively displays parallel Rays of light in a specific way. It has changed in this way since 1920.

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Since 1920, computer technology has undergone a major change from mechanical calculators to today's next-generation computers, greatly increasing computing power and reach.

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Since 1920 to the present, telephone technology has shown a great change from landline phones to mobile phones and smartphones. Today, phones have become multifunctional devices with internet access and various applications other than communication.