The history of the telephone

By koban boyd

  • Phone

    Engineers aboard the steamship blazer laying the first successful telegraph cable across the english channel in 1851. the cable was laid from dover to calais a distance of about 34km.

  • The first telephone

    In boston usa Alexaneder graham bell a scottish born inventor made the first telephone voice call.

  • Telephone

    Alexander bell it was 100,000 to buy a telephone in 1876

  • Early telephone

    Early telephone exchanges employed large numbers of connected manually. automatic mechanical switches were introduced from 1889. computers now connect most calls.

  • Telephone inventer

    Scottish-born american inventor alexander graham bell invented the telephone in 1876 the instrument soon incorporated improvements by others. bell is seen here opening the new york-chicago telephone service in 1892

  • The history of the telephone

    alexander bell made the telephone genera knowiedge

  • The referencer

    https://docs.google.com/document/d/1RBWwkpY7ZUJ8KwEwQSn8r3gu_cb9ayb6Zt497li093Y/edit

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