なみ直列 ちょくれつ変換 へんかん ではありませんでした
namichokuretsuen kankidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 並直列変換器

1. Was not a parallel conversion unit.; Was not a parallel converter.

Past/Perfective
Negative
Polite
Formal Register
Computing