手机发展史1[精选PPT课件].ppt

文档介绍：The History of Mobilephone
演讲:徐宇
文字:仲康、姚晨佼、马汝杰、张亮
制作:李伟、李永超、刘雪瑞
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Recent mobile phone
Concept mobile phone
Early mobile phone
2
Early mobile phone
Recent mobile phone
Concept mobile phone
3
Prototype of mobile phone
telephones
pagers
Mobile phones
4
Early mobile phone
Recent mobile phone
Concept mobile phone
More portable
and more function
than the earlier.
Improvements:
Disadvantages:
Too big and has little function
5
Early mobile phone
Recent mobile phone
Concept mobile phone
Added functions:
Protection of mobile phone keys
More fashionable appearance
Practicability increased
Flip phones
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Early mobile phone
Recent mobile phone
Concept mobile phone
Function added :
Music
Photography
Bluetooth
Camera
video player
Commen phone
8
Concept mobile phone
Recent mobile phone
Early mobile phone
9
Early model
Newton
.
Recent mobile phone
Early mobile phone
Concept mobile phone
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