CPU

✅ CPU component

📍 ALU, CU, MU

ALU (Arithmetic Logic Unit)

연산, AND, OR, and NOT

CU (Control Unit)

• manages and coordinates the operations of the CPU
• directing the operation of the other components within the CPU to execute the instructions of a program
• CU & ALU 연산의 순서 조정
• decodes order, sends the order to according units(memory unit, ALU, Input/Output devices)

MU (Memory Unit), Register

small set of data holding place for fast data processing by CPU

• 고속 기억장치

• 연산하다가 작은 값들 저장해두기

• Types of Registers
  • Accumulator: register for storing arismetic data
  • MAR: Memory Address Registers
    • holds address of location to be accessed from memory
    • MAR and MDR facilitate communication between CPU ↔️ memory
  • MDR: Memory Data Registers
    • save data to be written into or to be read out from addressed location
  • PC: Program Counter
    • contain memory of next instrucion to be fetched
  • IR: Instruction Register
    • holds instruction that is just about to be executed

➕ CPU clock frequency

• CPU의 동작 속도
• ALU, CU, MU가 유기적으로 동작하는 것을 1사이클이라고 쳤을 때
  1Hz(1초에 한 사이클) = 1cycle/s
  헤르츠가 높으면 높을수록 1초안에 여러번 돈다는 것이니 성능이 더 좋은 것이다.

➕ CPU multi-core

• CPU안에 여러 개의 코어가 있다.
• CPU 코어: ALU, CU
• CPU 코어가 많을수록, 멀티코어일 수록 성능이 좋다.

💡 Reference

https://www.geeksforgeeks.org/different-classes-of-cpu-registers/?ref=header_search