generated at
legacy system
レガシーシステム
Application retirement
Software rot
Data migration
Deprecation
Digital dark age
Legacy encoding
Legacy-free PC
Legacy port
Retrocomputing
software archaeology
Software brittleness
Software entropy
Stovepipe system
Vintage computer

googlelegacy system
Google画像検索legacy system
Google定義検索 legacy system
wikipedialegacy system
weblio legacy system
kotobank legacy system
jisho legacy system