

. 5.17. ᨠ 

⮢  ஥ .  筮 ⮨  業ࠫ-
 ⥪ﭭ  ⮫騭  ᪮쪮 ஭, ⮩ ᯫ譮
⥪ﭭ 窮.    ᢮ । ⠭   -
 .   ⮢   ⢥ ਠ 
ᢥ⮢ ᯮ짮 ⥪.  ᮢ६ ࠧࠡ⪠ ᯮ
⠪ ⨪. ⮢  祭 ⢨⥫  娬
ᮥ  ࠧꥬ.  ⢥ 筨 ᢥ  ⠪ 
ਬ ᢥ⮤ (LED - Light Emitting Diode),  ଠ
 ⥬  ⥭ᨢ ᢥ.  ਥ 
 ⥪ ८ࠧ ᢥ⮢   ᪨ ᨣ.
  ⨯ ⮢  -   -
.    訩 ,  ⮨
  । ଠ樨  訥 ﭨ.  . 5.18
 ⮢   ࠧꥬ.

쭠 ⥬  IBM

 ஭  쭠 ⥬  IBM   ந-
   த ᠬ ମ IBM.  ⥬ ᭮  㡫-'
 ମ IBM ⠭  ஢ ᮥ  
ᮢ  ।   ⥬  ࠧ ⨯
.  ⥬,  㡫  1984 , 뫠 ।-
祭  ᯮ짮  ⢥ ᭮   Token Ring 

⮪,                                161

6 .2123