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Writing with quill pen in all capital letters then developed lowercase letters.
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Schools start using blackboards.
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The first proper fountain pen was invented.
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The modern ball point pen was created.
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The whiteboard is created however it is not used until later when the dry erase marker is introduced.
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The chalkboard was introduced and replaced the blackboards.
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The dry erase marker is created and used.
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The first roller ball pen was created for a better ink flow.
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The SmartBoard was created and used instead of the chalkboards in some places.