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📁 《Big C++ 》Third Edition电子书和代码全集-Part1

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<h2>The Anatomy of a Computer (CPU, Memory, and bus)</h2>

<ul>
<li><font size="+1">CPU (Central Processing Unit):</font> 
<ul>
<li><font size="+1">Plastic, metal and mostly silicon.</font></li>

<li><font size="+1">Composed of several million
transistors.</font></li>

<li><font size="+1">Enormously complicated wiring.</font></li>

<li><font size="+1">Performs program control, arithmetic, and data
movement.</font></li>

<li><font size="+1">Locates and executes program
instructions.</font></li>
</ul>
</li>

<li><font size="+1">Memory:</font> 
<ul>
<li><font size="+1">RAM (Random Access Memory): read-write
memory.</font></li>

<li><font size="+1">ROM (Read Only Memory): contains certain
programs that must always be present.</font></li>

<li><font size="+1">Secondary storage (e.g. a hard drive) provides
<i>persistent</i> storage.</font></li>
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</li>

<li><font size="+1">The <i>bus</i> is a set of electrical lines
that connect the CPU, RAM, and other devices.</font></li>
</ul>

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