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href="https://lruihao.cn/data.html"><span hidden itemprop="author" itemscope="" itemtype="http://schema.org/Person"><meta itemprop="name" content="李瑞豪"><meta itemprop="description" content="so far so good"><meta itemprop="image" content="/images/avatar.png"></span><span hidden itemprop="publisher" itemscope="" itemtype="http://schema.org/Organization"><meta itemprop="name" content="博採眾長"></span><header class="post-header"><h2 class="post-title" itemprop="name headline">计算机数据</h2><div class="post-meta"><span class="post-time"><span class="post-meta-item-icon"><i class="fa fa-calendar-o"></i> </span><span class="post-meta-item-text">发表于</span> <time title="创建时间：2018-10-08 23:01:10" itemprop="dateCreated datePublished" datetime="2018-10-08T23:01:10+08:00">2018-10-08</time> <span class="post-meta-divider">|</span> <span class="post-meta-item-icon"><i class="fa fa-calendar-check-o"></i> </span><span class="post-meta-item-text">更新于</span> <time title="修改时间：2018-10-09 16:23:08" itemprop="dateModified" datetime="2018-10-09T16:23:08+08:00">2018-10-09</time> </span><span class="post-category"><span class="post-meta-divider">|</span> <span class="post-meta-item-icon"><i class="fa fa-folder-o"></i> </span><span class="post-meta-item-text">分类于</span> <span itemprop="about" itemscope="" itemtype="http://schema.org/Thing"><a href="/categories/计算机组成与体系结构/" itemprop="url" rel="index"><span itemprop="name">计算机组成与体系结构</span></a></span> </span><span class="post-comments-count"><span class="post-meta-divider">|</span> <span class="post-meta-item-icon"><i class="fa fa-comment-o"></i> </span><a href="/data.html#comments" itemprop="discussionUrl"><span class="post-meta-item-text">评论数：</span> <span class="post-comments-count valine-comment-count" data-xid="/data.html" itemprop="commentCount"></span> </a></span><span class="post-meta-divider">|</span> <span class="post-meta-item-icon"><i class="fa fa-eye"></i> 阅读次数： <span class="busuanzi-value" id="busuanzi_value_page_pv"></span> </span><span class="post-meta-divider">|</span> <span title="post.wordcount"><span class="post-meta-item-icon"><i class="fa fa-file-word-o"></i></span>字数： 225</span></div></header><div class="post-body" itemprop="articleBody"><h3 id="数据的表示"><a href="#数据的表示" class="headerlink" title="数据的表示"></a>数据的表示</h3><p><strong>数据的表示可分为：原码，反码和补码。（二进制）</strong></p><ul><li>原码： 符号位0为正，1为负。</li><li>反码： 符号位0为正，1为负。<ul><li>正数： 反码同原码。</li><li>负数： 符号位除外其他位按位取反。</li></ul></li><li>补码：<ul><li>正数： 同原码。</li><li>负数： 符号位除外其他位按位取反再+1。</li></ul></li><li>移码： 补码符号位取反。</li></ul><h3 id="数据表示范围"><a href="#数据表示范围" class="headerlink" title="数据表示范围"></a>数据表示范围</h3><ul><li>原码： <code>-(z^n-1 - 1) ~ 2^n-1 - 1</code></li><li>反码： <code>-(z^n-1 - 1) ~ 2^n-1 - 1</code></li><li>补码： <code>-z^n-1 ~ 2^n-1 - 1</code> (补码正0和负0相同，少占一数位，就多一个范围)</li></ul><p>例：<br>8位二进制，除去符号位还有7位，7个1为最大数，相当于8个1减1，也就是2^7-1,所以范围就算出来了。</p><h3 id="浮点数运算"><a href="#浮点数运算" class="headerlink" title="浮点数运算"></a>浮点数运算</h3><p><strong>对阶（小阶对大阶）+ 尾数计算（科学计数法）+ 结果规格化（科学技术法）</strong></p></div><div><div style="padding:10px 0;margin:20px auto;width:90%;text-align:center"><div>感谢支持！</div><button id="rewardButton" disable="enable" onclick="var qr = document.getElementById("QR"); if (qr.style.display === 'none') {qr.style.display='block';} else {qr.style.display='none'}"><span>打赏</span></button><div id="QR" style="display:none"><div id="wechat" style="display:inline-block"><img id="wechat_qr" src="/images/wechatpay.gif" alt="李瑞豪 微信支付"><p>微信支付</p></div><div id="alipay" style="display:inline-block"><img id="alipay_qr" src="/images/alipay.gif" alt="李瑞豪 支付宝"><p>支付宝</p></div></div></div></div><div><ul class="post-copyright"><li class="post-copyright-author"><strong>本文作者： </strong>李瑞豪</li><li class="post-copyright-link"><strong>本文链接：</strong> <a href="https://lruihao.cn/data.html" title="计算机数据">https://lruihao.cn/data.html</a></li><li class="post-copyright-license"><strong>版权声明： 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