- . , .
, , : ( "" - "der Sender") , , , - - ("" - "der Empfänger"). , "" -
"". , :
1. , .
2. (""), , "" "" (: ; ).
3. "" "" " " (: , , , ; , , ).
"" ("Code"). " , ". " " - - , . , . "" , "" . , , "", , "" ('decodiert").
. , " " (. feed-back). - - -
. ; , , . - ! , . ; , , .
, , , . , , .
"" . , ? , . . , , - , " ". , , , , , , " ". "" - , : , .