Jawaban dari "The inventor of the first mobile phone was Martin Cooper, a Motorola employee on April 3, 1973, alth..."

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The Inventor Of The First Mobile Phone Was Martin Cooper, A Motorola Employee On April 3, 1973, Although Many Were Mentioned The Inventors Of Mobile Phones Was A Team From One Of The Motorola Divisions (the Division Where Cooper Worked) With The First Model Was DynaTAC. The Idea That Was Coined By Cooper Was A Communication Device That Was Small And Easy To Carry Around Flexibly.

Cooper And His Team Faced The Challenge Of Inserting All Electronic Material Into The Small Sized Device For The First Time. But Finally A First Cellphone Was Successfully Completed With A Total Weight Of Two Kilograms. To Produce It, Motorola Requires A Fee Equivalent To US $ 1 Million. "In 1983, Portable Cellphones Worth US $ 4 Thousand (Rp36 Million), Equivalent To US $ 10 Thousand (Rp90 Million).

After Successfully Producing Cellphones, The Next Biggest Challenge Was To Adapt The Infrastructure To Support The Mobile Communication System By Creating A Network System That Only Requires 3 MHz Of Spectrum, Equivalent To Five TV Channels Channeled Throughout The World.

Another Figure Who Is Known To Be Very Instrumental In The World Of Cellular Communication Is Amos Joel Jr. Who Was Born In Philadelphia, March 12, 1918, He Is Indeed Recognized Worldwide As An Expert In The Field Of Switching. He Received A Bachelor's (1940) Diploma And Master's Degree (1942) In Electronic Engineering From MIT. Shortly After The Study, He Began His Career For 43 Years (from July 1940-March 1983) At Bell Telephone Laboratories, Where He Received More Than 70 American Patents In The Telecommunications Sector, Especially In The Field Of Switching. Amos E Joel Jr., Made A Mobile Telephone Switching System From One Cell Region To Another. This Switching Must Work When Mobile Phone Users Move Or Move From One Cell To Another So That The Conversation Is Not Interrupted. Because Of Amos Joel's Invention, The Use Of Mobile Phones Has Become Comfortable.

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Jawaban: #1: Penemu ponsel pertama adalah Martin Cooper, seorang karyawan Motorola pada 3 April 1973, walaupun banyak yang menyebutkan penemu ponsel adalah tim dari salah satu divisi Motorola (divisi tempat Cooper bekerja) dengan model pertama adalah DynaTAC. ide yang diciptakan oleh Cooper adalah perangkat komunikasi yang kecil dan mudah dibawa-bawa secara fleksibel.

Cooper dan timnya menghadapi tantangan untuk memasukkan semua bahan elektronik ke perangkat berukuran kecil untuk pertama kalinya. tetapi akhirnya ponsel pertama berhasil diselesaikan dengan berat total dua kilogram. Untuk memproduksinya, Motorola membutuhkan biaya yang setara dengan US $ 1 juta. "Pada tahun 1983, ponsel portabel bernilai US $ 4 ribu (Rp36 juta), setara dengan US $ 10 ribu (Rp90 juta).

setelah berhasil memproduksi ponsel, tantangan terbesar berikutnya adalah mengadaptasi infrastruktur untuk mendukung sistem komunikasi seluler dengan menciptakan sistem jaringan yang hanya membutuhkan spektrum 3 MHz, setara dengan lima saluran TV yang disalurkan ke seluruh dunia.