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8 mm was representing the width of the format but it actually is 7.90mm
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The home telephone a letting people to do voice conversation at home. At the time, typing the correct phone number is hard, people usually type the wrong number and have to dial again.
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It was used to control wirelessly. When the remote control was invented, the reciever did not reciece well so that people will have to point the remote very precisely.
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A 2 GB USB can store memory 1000 times than the floddy disk.
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Mircocassette voice recorder were used in many aspect in the history such as interviewing and sending voice over world.
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The letter the printer printed out is all made of dot which are as the same as the name.
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A single scratch on the top of the cd can make it unreadable.
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It was invented by a company in Taiwan.
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It helps the pc or laptop to access the internet wirelessly. These are mainly used by business people.
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Most of the people can't see the different bewteen routers and modems.