直列 ちょくれつ加算 かさん ではありませんでした
chokuretsukasankidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 直列加算器

1. Was not a serial adder.; Was not a direct adder.

Past/Perfective
Negative
Polite
Formal Register
Computing