초당 10억 회의 주기를 나타내는 주파수 단위로, 현재는 주로 기가헤르츠(GHz)로 불림.
A unit of frequency equal to one billion cycles per second, now more commonly referred to as gigahertz (GHz).
예문:
"The early microwave equipment operated at a frequency of 5 gcs."
"In older scientific papers, gcs was the standard term before gigahertz became widely adopted."