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<title>Num Lock</title>
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<span id="openzim-page-title" class="mw-page-title-main"><span class="mw-page-title-main">Num Lock</span></span>
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<p><b>Num Lock</b> or <b>Number Lock</b> (<b>⇭</b>) is a key on the <a href="Numeric_keypad" title="Numeric keypad">numeric keypad</a> of most <a href="Computer_keyboard" title="Computer keyboard">computer keyboards</a>. It is a <a href="Lock_key" title="Lock key">lock key</a>, like <a href="Caps_Lock" title="Caps Lock">Caps Lock</a> and <a href="Scroll_Lock" title="Scroll Lock">Scroll Lock</a>. Its state affects the function of the numeric keypad commonly located to the right of the main keyboard and is commonly displayed by an <a href="LED" class="mw-redirect" title="LED">LED</a> built into the keyboard.
</p><p>The Num Lock key exists because earlier 84-key <a href="IBM_PC_keyboard" title="IBM PC keyboard">IBM PC keyboards</a> did not have cursor control or arrows separate from the numeric keypad. Most earlier computer keyboards had different number keys and cursor control keys; however, to reduce cost, IBM chose to combine the two in their early PC keyboards. Num Lock would be used to select between the two functions. On some <a href="Laptop_computers" class="mw-redirect" title="Laptop computers">laptop computers</a>, the Num Lock key is used to convert part of the main keyboard to act as a (slightly skewed) numeric keypad rather than letters. On some laptop computers, the Num Lock key is absent and replaced by the use of a <a href="Key_combination" class="mw-redirect" title="Key combination">key combination</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>
</p><p>Since <a href="Apple_keyboards" title="Apple keyboards">Apple keyboards</a> never had a combination of arrow keys and numeric keypad (but some lacked arrow keys, function keys, and a numeric keypad altogether), Apple has keyboards with a separate numeric keypad but no functional Num Lock key. Keyboards manufactured by Apple will instead use a <a href="Clear_key" class="mw-redirect" title="Clear key"><i>Clear</i> key</a> but not all Apple manufactured keyboards will be provided with it.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
</p>
<table class="wikitable">
<caption>Keys affected by Num Lock
</caption>
<tbody><tr>
<th>Key on <br>Numeric Keypad
</th>
<th>Num Lock On
</th>
<th>Num Lock Off
</th></tr>
<tr>
<td>1
</td>
<td>1
</td>
<td><a href="End_key" title="End key">End</a>
</td></tr>
<tr>
<td>2
</td>
<td>2
</td>
<td><a href="Arrow_keys" title="Arrow keys">Down Arrow</a>
</td></tr>
<tr>
<td>3
</td>
<td>3
</td>
<td><a href="Page_Down" class="mw-redirect" title="Page Down">Page Down</a>
</td></tr>
<tr>
<td>4
</td>
<td>4
</td>
<td><a href="Arrow_keys" title="Arrow keys">Left Arrow</a>
</td></tr>
<tr>
<td>5
</td>
<td>5
</td>
<td>does nothing (usually)<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>
</td></tr>
<tr>
<td>6
</td>
<td>6
</td>
<td><a href="Arrow_keys" title="Arrow keys">Right Arrow</a>
</td></tr>
<tr>
<td>7
</td>
<td>7
</td>
<td><a href="Home_key" title="Home key">Home</a>
</td></tr>
<tr>
<td>8
</td>
<td>8
</td>
<td><a href="Arrow_keys" title="Arrow keys">Up Arrow</a>
</td></tr>
<tr>
<td>9
</td>
<td>9
</td>
<td><a href="Page_Up" class="mw-redirect" title="Page Up">Page Up</a>
</td></tr>
<tr>
<td>0
</td>
<td>0 (zero or comma)
</td>
<td><a href="Insert_key" title="Insert key">Insert</a>
</td></tr>
<tr>
<td>.
</td>
<td><code>.</code> (dot) or <code>,</code> (comma)
</td>
<td><a href="Delete_key" title="Delete key">Delete</a>
</td></tr></tbody></table>
<table class="keyboard" style="border: 1px solid #a2a9b1; background-color: #f8f9fa; padding: 5px;margin:auto; font-size:90%; text-align:center;">
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</th></tr>
<tr style="font-size:75%;">
<td style="border:1px solid #666;padding:0 .2em;background-color:#DADADA;"><a href="Esc_key" title="Esc key">Esc</a>
</td>
<td style="width:0.2em;">
</td>
<td style="border:1px solid #666;padding:0 .2em;"><a href="Function_key" title="Function key">F1</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;"><a href="Function_key" title="Function key">F2</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;"><a href="Function_key" title="Function key">F3</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;"><a href="Function_key" title="Function key">F4</a>
</td>
<td style="width:0.5em;">
</td>
<td style="border:1px solid #666;padding:0 .2em;background-color:#DADADA"><a href="Function_key" title="Function key">F5</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;background-color:#DADADA"><a href="Function_key" title="Function key">F6</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;background-color:#DADADA"><a href="Function_key" title="Function key">F7</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;background-color:#DADADA"><a href="Function_key" title="Function key">F8</a>
</td>
<td style="width:0.5em;">
</td>
<td style="border:1px solid #666;padding:0 .2em;"><a href="Function_key" title="Function key">F9</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;"><a href="Function_key" title="Function key">F10</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;"><a href="Function_key" title="Function key">F11</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;"><a href="Function_key" title="Function key">F12</a>
</td>
<td style="width:0.2em;">
</td>
<td style="border:1px solid #666;padding:0 .2em;background-color:#DADADA"><a href="Print_Screen" title="Print Screen">PrtScn</a>/<br><a href="System_request" title="System request">SysRq</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;background-color:#DADADA"><a href="Scroll_Lock" title="Scroll Lock">Scroll<br>Lock</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;background-color:#DADADA"><a href="Break_key" title="Break key">Pause</a>/<br><a href="Break_key" title="Break key">Break</a>
</td>
<td style="width:0.2em;">
</td>
<td style="width:30px;">
</td>
<td style="width:30px;">
</td>
<td style="width:30px;">
</td>
<td style="width:30px;">
</td></tr>
<tr>
<td colspan="16" style="width:450px;height:0.5em;">
</td>
<td>
</td>
<td colspan="3" style="width:100px;height:0.5em;">
</td>
<td>
</td>
<td colspan="4" style="width:120px;height:0.5em;">
</td></tr>
<tr>
<td colspan="16" rowspan="5" style="border:none;padding:0;">
</td>
<td rowspan="5">
</td>
<td style="border:1px solid #666;padding:0 .2em;font-size:75%;background-color:#DADADA"><a href="Insert_key" title="Insert key">Insert</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;font-size:75%;background-color:#DADADA"><a href="Home_key" title="Home key">Home</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;font-size:75%;background-color:#DADADA"><a href="Page_Up_and_Page_Down_keys" title="Page Up and Page Down keys">PgUp</a>
</td>
<td rowspan="5">
</td>
<td style="border:1px solid #666;padding:0 .2em;font-size:75%;background-color:#DADADA"><a href="Num_lock" class="mw-redirect" title="Num lock"><small>Num<br>Lock</small></a>
</td>
<td style="border:1px solid #666;padding:0 .2em;line-height:2.2em;background-color:#DADADA"><a href="Slash_(punctuation)" title="Slash (punctuation)">∕</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;line-height:2.2em;background-color:#DADADA"><a href="Asterisk" title="Asterisk">∗</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;line-height:2.2em;background-color:#DADADA"><a href="Minus_sign" class="mw-redirect" title="Minus sign">−</a>
</td></tr>
<tr>
<td style="border:1px solid #666;padding:0 .2em;font-size:75%;background-color:#DADADA"><a href="Delete_key" title="Delete key">Delete</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;font-size:75%;background-color:#DADADA"><a href="End_key" title="End key">End</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;font-size:75%;background-color:#DADADA"><a href="Page_Up_and_Page_Down_keys" title="Page Up and Page Down keys">PgDn</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;line-height:2.2em;"><a href="7" title="7">7</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;line-height:2.2em;"><a href="8" title="8">8</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;line-height:2.2em;"><a href="9" title="9">9</a>
</td>
<td rowspan="2" style="border:1px solid #666;padding:0 .2em;background-color:#DADADA"><a href="Plus_sign" class="mw-redirect" title="Plus sign">+</a>
</td></tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
<td style="border:1px solid #666;padding:0 .2em;line-height:2.2em;"><a href="4" title="4">4</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;line-height:2.2em;"><a href="5" title="5">5</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;line-height:2.2em;"><a href="6" title="6">6</a>
</td></tr>
<tr>
<td>
</td>
<td style="border:1px solid #666;padding:0 .2em;line-height:2.2em;background-color:#DADADA"><a href="Arrow_keys" title="Arrow keys">↑</a>
</td>
<td>
</td>
<td style="border:1px solid #666;padding:0 .2em;line-height:2.2em;"><a href="1" title="1">1</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;line-height:2.2em;"><a href="2" title="2">2</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;line-height:2.2em;"><a href="3" title="3">3</a>
</td>
<td rowspan="2" style="border:1px solid #666;padding:0 .2em;font-size:85%;background-color:#DADADA"><a href="Enter_key" title="Enter key"><small>Enter</small></a>
</td></tr>
<tr>
<td style="border:1px solid #666;padding:0 .2em;line-height:2.2em;background-color:#DADADA;"><a href="Arrow_keys" title="Arrow keys">←</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;line-height:2.2em;background-color:#DADADA"><a href="Arrow_keys" title="Arrow keys">↓</a>
</td>
<td style="border:1px solid #666;padding:0 .2em;line-height:2.2em;background-color:#DADADA"><a href="Arrow_keys" title="Arrow keys">→</a>
</td>
<td colspan="2" style="border:1px solid #666;line-height:1em;padding:0 .1em;text-align:left;"> <a href="0" title="0">0</a><br> <a href="Insert_key" title="Insert key"><small>Ins</small></a>
</td>
<td style="border:1px solid #666;line-height:1.1em;padding:0 .1em;"> <a href="Decimal_separator" title="Decimal separator">.</a> <br><a href="Delete_key" title="Delete key"><small>Del</small></a>
</td></tr></tbody></table>
<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>
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<div class="mw-references-wrap"><ol class="references">
<li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">
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</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://support.lenovo.com/us/en/solutions/ht117805">"Press Fn+F8, F7, or Insert to enable/disable numlock"</a>. <i>Lenovo Support</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2023-09-18</span></span>.</cite></span>
</li>
<li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://support.apple.com/en-us/HT202676">"Use your Apple Keyboard in Windows with Boot Camp"</a>. <i>Apple Support</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2022-01-16</span></span>.</cite></span>
</li>
<li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://superuser.com/questions/1143071/has-the-5-key-on-the-numeric-keypad-ever-had-an-alternate-function-in-hardware">"keyboard - Has the '5' key on the numeric keypad ever had an alternate function in hardware?"</a>. <i>Super User</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2022-01-16</span></span>.</cite></span>
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<ul><li><a href="Control_key" title="Control key">Control</a></li>
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<li><a href="Fn_key" title="Fn key">Fn</a></li></ul>
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<ul><li><a href="Scroll_Lock" title="Scroll Lock">Scroll Lock</a></li>
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<li><a href="F-Lock" title="F-Lock">F-Lock</a></li></ul>
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<ul><li><a href="Carriage_return" title="Carriage return">Carriage return</a></li></ul></li>
<li><a href="Backspace" title="Backspace">Backspace</a></li>
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<li><a href="Language_input_keys" title="Language input keys">Language input</a></li></ul>
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<ul><li><a href="Function_key" title="Function key">Function keys</a></li>
<li><a href="Print_Screen" title="Print Screen">Print Screen</a></li>
<li><a href="System_request" title="System request">System request</a></li>
<li><a href="Break_key" title="Break key">Break/Pause</a></li></ul>
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<ul><li><a href="Power_key" title="Power key">Power management keys</a> (Power, Sleep, Wake)</li>
<li><a href="Any_key" title="Any key">Any key</a></li>
<li><a href="Macro_key" title="Macro key">Macro key</a></li>
<li><a href="Copilot_key" class="mw-redirect" title="Copilot key">Copilot key</a></li>
<li><a href="Keyboard_technology" title="Keyboard technology">Keyboard technology</a></li>
<li><a href="Keyboard_shortcut" title="Keyboard shortcut">Keyboard shortcut</a></li>
<li><a href="Keyboard_layout" title="Keyboard layout">Keyboard layout</a></li>
<li><a href="Keyboard_mapping" class="mw-redirect" title="Keyboard mapping">Keyboard mapping</a></li></ul>
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This article is issued from <a class="external text" title="Last edited on 2025-01-04" href="https://en.wikipedia.org/wiki/?title=Num_Lock&oldid=1267211694">Wikipedia</a>. The text is available under <a class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en">Creative Commons Attribution-Share Alike 4.0</a> unless otherwise noted. Additional terms may apply for the media files.
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