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16:Software originally released in the year 1955.
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198:Software companies established in 1955
218:Programming languages created in 1955
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202:(1 C, 1 P)
242:(1 P)
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167:2000s
162:1990s
157:1980s
152:1970s
147:1960s
141:1950s
135:1940s
130:1930s
125:1920s
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