个人电脑键盘上曾经广泛使用的图标符号正在逐步退出历史舞台。1从20世纪中期开始，IBM等计算机制造商在键盘设计中大量采用符号来标注功能键，包括Print Screen、Insert、Delete等按键。1这些符号的灵感各异：Print Screen的设计源于将旧CRT屏幕转换为纸张的概念，而Insert和Delete符号则借鉴了校对标记的视觉语言。1
随着时间推移，这些曾经的行业标准逐渐被纯文字标注取代。1欧美地区在符号与文字使用上的差异对这一转变产生了深刻影响。1IBM Selectric打字机在1970年代推出美式和欧式两个版本，采用了明显不同的键符设计，而IBM 1130计算机在1965年更是使用了独特的空格键符号。1最终，只有四个符号成功保留至今：⇧（Shift）、↵（Enter）、⇥（Tab）和箭头符号（Backspace）。1近年来，Apple推动美式键盘向欧式键盘靠近，重新引入了更多图标符号设计。1尽管这些古老的键盘符号大多已从日常使用中消失，但包括⎀、⎃、⎁、⎂在内的多个符号至今仍保存在Unicode字符集中。1
Personal computer keyboards once featured a rich visual language of symbols that have largely faded from modern design.1 The history of these glyphs reveals how manufacturers like IBM approached interface design differently across regions, with American and European versions of equipment employing distinct symbolic vocabularies.1 IBM's Selectric typewriter in the 1970s exemplified this regional divide, while the IBM 1130 computer from 1965 even employed an unusual space key symbol that departed from standard conventions.1
Many symbols that adorned early keyboards drew inspiration from practical sources.1 The Print Screen symbol, for instance, visually represented an old CRT monitor transforming into a sheet of paper, while the Insert and Delete symbols borrowed directly from proofreading marks used in editorial work.1 Despite the gradual transition toward text-based labeling, four symbols proved resilient enough to survive into contemporary use: the Shift symbol (⇧), Enter symbol (↵), Tab symbol (⇥), and the Backspace arrow.1 Several archaic symbols—including ⎀, ⎃, ⎁, and ⎂—persist within Unicode today as digital artifacts of keyboard design history.1
Recent design trends suggest a potential reversal of this symbolic decline.1 Apple has begun pushing American keyboards toward European-style layouts that reincorporate icon-based symbols, indicating renewed interest in visual communication alongside or in place of text labels.1
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