しゅ記憶 きおく装置 そうちじゃありませんでした
shuki oku sōchijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 主記憶装置

1. It was not main memory.; It wasn't the main memory device.

Past/Perfective
Negative
Polite
Terminal Form
Computing