기존 셀룰러 시스템보다 높은 주파수 대역을 활용하는 디지털 기반의 개인 무선 이동 통신 서비스.
A set of wireless services that use digital technology and higher frequency bands than standard cellular systems to provide mobile communication.
예문:
"The adoption of PCS technology allowed for more secure and clearer voice transmissions."
"Many mobile operators transitioned to PCS to accommodate the growing number of urban subscribers."
데이터를 기록하기 위해 종이 카드에 구멍을 뚫어 정보를 관리하고 처리하던 초기 컴퓨터 데이터 처리 방식.
A legacy data processing method where information is represented by the presence or absence of holes in specific positions on paper cards.
예문:
"Before the era of modern hard drives, the PCS was the primary method for storing large databases."
"Operators spent hours organizing cards for the PCS to ensure the program ran correctly."