Cara Kerja
Merge pull request #6 from 5fian/master

Penambahan slide
Merge pull request #7 from grantwilbert/master

Cara Kerja
Slide Sejarah dan buat link utk ke html sejarah
Fungsi Fiber Optik
Sebab pelemahan cahaya Fiber Optik
Merge pull request #8 from eliottan/master

Fungsi Fiber Optik
Edit edit sedikit
Merge remote-tracking branch 'upstream/master'