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美国大学C++课件(基础篇)入门 C++ PPT && HW Introduction to Computers & C++ Programming Hardware and Software Software (i.e., the instructions you write) controls hardware (i.e., computers). Regardless of differences in physical appearance, computers can be envisioned as divided into various logical units or sections: Input unit: This “receiving” section obtains information (data and computer programs) from input devices and places it at the disposal of the other units for processing. Output unit: This “shipping” section takes information the computer has processed and places it on various output devices to make it available for use outside the computer. Memory unit: This rapid-access section retains information that has been entered through the input unit, also retains processed information until it can be placed on output devices by the output unit. Arithmetic and logic unit (ALU): This unit performs calculations, and also contains the decision mechanisms. The ALU is implemented as part of the next logical unit, the CPU. Central processing unit (CPU): The CPU tells the input unit when information should be read into the memory unit, tells the ALU when information from the memory unit should be used in calculations and tells the output unit when to send information from the memory unit to certain output devices.

Caltech C++ HW && Exam C++ 课程作业&&期末考试 基础知识练习

org.springframework.beans-3.0.2.RELEASE

hibernate.jar

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