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  1. COMPUTER SCIENCE
  2. Computer Architecture 101

RAM vs ROM

  1. RAM (Random Access Memory):

    • RAM은 일반적으로 "메인 메모리" 또는 "주 메모리"라고도 불립니다.

    • RAM은 컴퓨터가 실행 중인 프로그램과 데이터를 일시적으로 저장하는 곳입니다. 즉, CPU가 직접 접근하여 데이터를 읽거나 쓸 수 있는 메모리 영역입니다.

    • 전원이 꺼지면 RAM에 저장된 모든 데이터는 사라집니다.

  2. ROM (Read-Only Memory):

    • ROM은 컴퓨터의 메인 메모리와는 다른 위치에 존재합니다.

    • 일반적으로 ROM은 시스템의 부트로더, BIOS 또는 특정 펌웨어와 같은 초기화 코드나 시스템 설정을 저장하는데 사용됩니다.

    • ROM의 내용은 전원이 꺼져도 지워지지 않으며, 일반적으로 사용자가 쉽게 변경할 수 없습니다. 그러나 재프로그래밍 가능한 ROM 형태들 (예: PROM, EPROM, EEPROM, Flash Memory)은 특정 조건하에서 수정될 수 있습니다.

따라서, 메인 메모리는 주로 RAM으로 구성되며, ROM은 컴퓨터 시스템의 다른 부분에 위치하게 됩니다. 시작 시 (부팅 시) CPU는 ROM에 저장된 코드를 사용하여 초기화 과정을 수행한 다음, 일반적인 작업을 위해 RAM에 있는 프로그램과 데이터에 접근하게 됩니다.

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Last updated 1 year ago