読取 よみと書込 かきこ記憶 きおく装置 そうちでしょう
yomitorikakikomikiokusōchideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 読取り書込み記憶装置

1. Read/write storage device, likely.

Polite
Presumptive
Conjecture
Computing