Announcement is something said,written,or printed to make know has happened or (more often) what will happen.

In writing an announcement keep the following point :

We can find the announcement on television, radio, newspaper, billboard, etc.


Example announcement :
1. Attention please !
Due to some technical problem , the flight will be delayed for about 2 hours. We apologize for the inconvenient.
Announcement
Join us in :
English speech contest
agust 17 , 2009
student hall SMA 2 Palangka Raya
if you interestsd in, please contact Miss Uchi at the student Associatin room.