计算机系统，应该是每一个软件开发者的必读书。虽然现在编程语言已经离计算机系统越来越远，但是编程的核心技能还是紧贴着计算机系统。比如java这种面向对象的语言，虽然运行在虚拟机上，但时时刻刻都和计算机系统打着交道，所以不可不知的知识。(A computer system should be a must read for every software developer. Although programming languages are now far removed from compute