最小可识别的点阵字体应该就是 3*5 点阵了。
那它可以表示所有常规的 符号和字母和数字吗。
做个了个工具测试了下。
代码如下：
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="renderer" content="webkit">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>3 × 5 点阵</title>
<style>
.tb .active{
background:green;
}
.tb{
border:solid 1px black;
margin:5px;
float:left;
}
.tb td{
20px; height:20px;
border:solid 1px gray;
cursor:pointer;
}
</style>
<script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"></script>
</head>
<body>
<title>3 × 5 点阵</title>
<table class="tb" data-val="000000000000000">
<tr><th colspan="3"> </th></tr>
<tr><th colspan="3" style="font-size:12px; font-weight:normal;">000000000000000</th></tr>
<tr>
<td></td><td></td><td></td>
</tr>
<tr>
<td></td><td></td><td></td>
</tr>
<tr>
<td></td><td></td><td></td>
</tr>
<tr>
<td></td><td></td><td></td>
</tr>
<tr>
<td></td><td></td><td></td>
</tr>
</table>
<script>
$(function(){
var saveData = localStorage.getItem("data");
// console.log(saveData);
if (!saveData)
{
saveData = '000000000000000,010010010000010,101101000000000,101111101111101,010111010111010,100001010100001,010001110101010,010010000000000,010100100100010,010001001001010,000010101010000,000010111010000,000000000010010,000000111000000,000000000010000,000001010100000,111101101101111,110010010010111,111001111100111,111001011001111,101101111001001,111100111001111,111100111101111,111001001001001,111101111101111,111101111001111,000010000010000,000010000010010,001010100010001,000111000111000,100010001010100,111001010000010,111101101100111,010101111101101,110101110101111,111100100100111,110101101101110,111100111100111,111100111100100,111100101101111,101101111101101,111010010010111,111010010010110,100111100110101,100100100100111,101111111101101,111101101101101,010101101101010,111101111100100,111101111001001,100111100100100,111100010001111,111010010010010,101101101101111,101101101101010,101101111111101,101101010101101,101101101010010,111001010100111,110100100100110,000100010001000,011001001001011,010101000000000,000000000000111,010001000000000,111101111101101,100100111101111,111101100100111,001001111101111,111101111100111,111100110100100,111101111001011,100100111101101,010000010010010,010000010010110,100101110101101,010010010010011,000101111101101,000111101101101,000010101101010,000111101111100,000111101111001,000100110100100,011100010001110,010111010010011,000101101101111,000101101101010,000101101111101,000101010101000,101101111001111,000111010100111,001010110010001,010010010010010,100010011010100,000001111100000';
}
saveData = saveData.split(',');
saveData.shift();
for (var i=33; i<127; i++)
{
var tb = $('.tb').eq(0).clone();
tb.find('th').eq(0).html(String.fromCharCode(i));
$('body').append(tb);
var val = saveData.shift();
var index = 0;
tb.find('td').each(function(){
if (val.charAt(index++) == '1')
{
$(this).addClass('active');
}
});
tb.data('val', val);
tb.find('th').eq(1).html(val);
}
$('.tb td').click(function(){
$(this).toggleClass('active');
var val = '';
var tb = $(this).parents('table');
tb.find('td').each(function(){
val += $(this).hasClass('active') ? '1' : '0';
});
tb.find('th').eq(1).html(val);
var bo = false;
$('.tb').each(function(){
if ($(this).data('val') == val)
{
bo = true;
}
});
tb.data('val', val);
tb.css('border', bo ? '1px solid red' : '1px solid black');
var data = [];
$('.tb').each(function(){
data.push($(this).data('val'));
});
localStorage.setItem("data", data);
});
});
</script>
</body>
</html>
如图：
