单片机中定时器的使用

中断法相对于查询法有两个优点：1.节省能量 2.节省时间

定时器的使用方法： 
1.打开总中断 
2.设置定时器的工作方式 
3.设置初值 
4.打开定时中断 
5.打开定时计数

对于定时器0的初始化：

<code class="hljs cs has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> timer0(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span>){    EA = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//打开总中断</span>    TMOD |= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x01</span>;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//设置定时器的工作方式</span>    TH0 = (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">65536</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">20000</span>)/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">256</span>;    TL0 = (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">65536</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">20000</span>)%<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">256</span>;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//设置初值</span>    ET0 = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//打开定时中断</span>    TR0 = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//打开定时计数</span>}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li></ul>

同理可得定时器1 的初始化：

<code class="hljs cs has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> timer0(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span>){    EA = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//打开总中断</span>    TMOD |= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x01</span>;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//设置定时器的工作方式</span>    TH1 = (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">65536</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">20000</span>)/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">256</span>;    TL1 = (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">65536</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">20000</span>)%<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">256</span>;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//设置初值</span>    ET1 = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//打开定时中断</span>    TR1 = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//打开定时计数</span>}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li></ul>

在设置工作方式时，需要注意 
以下的这个表格： 
M1 M0 方式 说明 
0 0 0 13位定时器 
0 1 0 16位定时器 
1 0 0 8位定时器 
1 1 0 8位定时器

写完中断的初始化后，还要写中断服务函数：

<code class="hljs cs has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> timer0_isr() interrupt <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>{    TH0 = (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">65536</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2000</span>)/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">256</span>;    TL0 = (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">65536</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2000</span>)%<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">256</span>;    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*      在此处写上中断时应该干的事情    */</span>}<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> timer1_isr() interrupt <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span>{    TH1 = (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">65536</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2000</span>)/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">256</span>;    TL1 = (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">65536</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2000</span>)%<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">256</span>;    <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">/*      在此处写上中断时应该干的事情    */</span>}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li></ul><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li></ul>

在此附上用中断写的，数码管显示的时钟闹钟：

<code class="hljs cpp has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">#include <reg52.h></span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">#define SEGPORT P3</span>sbit bit_sel = P2^<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>;sbit seg_sel = P2^<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">unsigned</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">char</span> segdata[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">16</span>] = {<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x3f</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x06</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x5b</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x4f</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x66</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x6d</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x7d</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x07</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x7f</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x6f</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x77</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x7c</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x39</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x5e</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x79</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x71</span>};<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">unsigned</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">char</span> coode[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">8</span>] = {<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xfe</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xfd</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xfb</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xf7</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xef</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xdf</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xbf</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x7f</span>};<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">unsigned</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">char</span> outdata[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">8</span>] = {<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x3f</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x3f</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x40</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x3f</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x3f</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x40</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x3f</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x3f</span>};<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">unsigned</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">char</span> second = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">unsigned</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">char</span> minute = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">unsigned</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">char</span> hour = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">unsigned</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">char</span> j = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>;<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> timer0(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span>){    EA = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>;    TMOD |= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x01</span>;    TH0 = (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">65536</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">20000</span>)/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">256</span>;    TL0 = (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">65536</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">20000</span>)%<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">256</span>;    ET0 = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>;    TR0 = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>;}<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> timer1(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span>){    EA = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>;    TMOD |= <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x10</span>;    TH1 = (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">65536</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2000</span>)/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">256</span>;    TL1 = (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">65536</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2000</span>)%<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">256</span>;    ET1 = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>;    TR1 = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>;}<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> display(<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span>){    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">static</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">unsigned</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">char</span> i = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>;     SEGPORT = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xff</span>;             bit_sel = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>;     bit_sel = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>;     SEGPORT = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x0</span>;     seg_sel = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>;     seg_sel = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>;     SEGPORT = coode[i];     bit_sel = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>;     bit_sel = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>;     SEGPORT = outdata[i];     seg_sel = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>;     seg_sel = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>;    i++;    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">8</span> == i)    {        i = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>;    }}<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> main(){      timer1();      timer0();      <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">while</span>(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>);}<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> timer0_isr() interrupt <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>{    TH0 = (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">65536</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">20000</span>)/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">256</span>;    TL0 = (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">65536</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">20000</span>)%<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">256</span>;    j++;    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(j == <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">50</span>)    {        j = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>;        second++;        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">60</span> == second)        {             minute++;             second = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>;             <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">60</span> == minute)             {                  hour++;                 minute = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>;                 <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">24</span> == hour)                  {                       hour = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>;                   }              }         }     }    outdata[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>] = segdata[hour/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">10</span>];    outdata[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>] = segdata[hour%<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">10</span>];    outdata[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>] = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x40</span>;    outdata[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span>] = segdata[minute/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">10</span>];    outdata[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span>] = segdata[minute%<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">10</span>];    outdata[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5</span>] = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x40</span>;    outdata[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">6</span>] = segdata[second/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">10</span>];    outdata[<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">7</span>] = segdata[second%<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">10</span>];}<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> timer1_isr() interrupt <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span>{    TH1 = (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">65536</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2000</span>)/<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">256</span>;    TL1 = (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">65536</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2000</span>)%<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">256</span>;    display();}</code>