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The CD simplified things because of its weight and thinness. The sound was also crisper and more clear so people enjoyed listening to music on Cds. As well as it did not wear down like cassette tapes.
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Microsoft window is an interface programming that made the interface more user-friendly and it is what we are currently using for school. The platform was easier to use than other interfaces so non-technologically savvy people could utilize it.
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The disposable camera made taking photos assessable to everyone everywhere and was more convenient for travel or for when someone was traveling somewhere they didn't want to bring expensive camera equipment.
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Radar that we use today for airplanes and submarines and the like.
The Doppler Radar was created by Christian Andreas Doppler. -
Wireless cell phones made it easier to talk on the phone and move around. The creation of cellphones meant that people were stationary anymore when talking on the phone and were the beginning of cellphones becoming less about communication but about ease and accessibility.