第四週 Chp:4 系統單元的組成元件

CPU (central processing unit)

The central processing unit (CPU) is the portion of a computer system that carries out the instructions of a computer program, to perform the basic arithmetical, logical, and input/output operations of the system. The CPU plays a role somewhat analogous to the brain in the computer. The term has been in use in the computer industry at least since the early 1960s. The form, design and implementation of CPUs have changed dramatically since the earliest examples, but their fundamental operation remains much the same.
中央處理單元（CPU）是計算機系統進行計算機程序的指令，執行基本的算術，邏輯，和輸入/輸出系統的操作部分。CPU所扮演的角色有點類似於計算機的大腦。一詞至少自20世紀60年代初一直在計算機行業中使用。的形式，設計和實施的CPU已經發生了巨大的變化，因為最早的例子，但他們的基本操作仍然相同。