Simplify the following text for a Grade 11 native English-speaking person.
Original: Mojibake , lit . `` unintelligible sequence of characters '' -RCB- -RCB- , from the Japanese æ -- å -- ( moji ) `` character '' + å -- ã ` ( bake ) `` change '' , is the occurrence of incorrect , unreadable characters shown when computer software fails to render text correctly according to its associated character encoding .
Simplified: Mojibake -RCB- -RCB- is the name for incorrect , unreadable characters shown when computer software fails to show text correctly .