| Apr. 1983 |
Inauguration |
| Apr. 1986 |
Stock registration |
| Jan. 1992 |
Released "Intensive Course for Word Processing." |
| Oct. 1994 |
Released "Second Class Information Processing Engineer Course." |
| Nov. 1994 |
Established Communications Network Department.
Opened the computer online network "ad.net." |
| June 1995 |
Released "Travel Master," Certified Travel Supervisor Course. |
| Nov. 1995 |
Connected "ad.net" to the Internet. |
| May 1996 |
Released "Tsutenkaku"; Correspondence education system. |
| Jul. 1996 |
Released "Tsutenkaku" Examination for International Business Communication. |
| May 1997 |
Released "Medical Processing Intensive Course." |
| June 1998 |
Released "Internet Communicators Training Course." |
| Jan. 1999 |
Opened members-only Web site "ad.net town." |
| Feb. 2000 |
Released "Prim Kids," the Wonder Hippo series, The First Adventure. |
| Nov. 2000 |
Released "Beat Brains." |
| Jan. 2001 |
Started Pentagon21. |
| Aug. 2002 |
Released a web coference system "BizMate Pro Japanese Edition." |
