磁じ気きドラム

noun

magnetic drum

A historical rotating magnetic storage device used as main memory in early computers. Now largely obsolete; encountered mainly in computing history contexts.

• 1950年ねん代だいのコンピュータでは、磁じ気きドラムが主しゅ記き憶おく装そう置ちとして使つかわれていた。

  In 1950s computers, magnetic drums were used as main memory.