Your Mac won’t type U, I, O, J, K, L, and M? Here’s why<article>
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<p>Ever have a problem on your Mac, where you can’t type the letters and numbers 7, 8, 9, U, I, O, J, K, L, and M—and maybe some others?</p><p>It’s probably Mouse Keys at play, an accessibility feature in macOS that mimics an old IBM-style keypad feature.</p><h2>Num Lock and its computer history</h2>
<p>Keyboards still have vestiges of their origins on typewriters and mechanical calculators. We mostly ignore those in our day-to-day work. The Shift key, originally meant to literally raise a set of typebars in a typewriter, merely shifts among upper and lower case. And you know better than to press Caps Lock when entering passwords—Apple even alerts you when you have it accidentally enabled.</p><p class="jumpTag"><a href="/article/3323387/macs/you-mac-wont-type-u-i-o-j-k-l-and-m-heres-why.html#jump">To read this article in full, please click here[/url]</p></section></article>
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Your Mac won’t type U, I, O, J, K, L, and M? Here’s why
