Time since the invention of the transistor

Time since the invention of the transistor (74 y)

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Time since the invention of the transistor (74 y)

is 1/400 of Time since first humans in Europe (30,000 y)...more
is 1/400 of Time since extinction of Neanderthals (30,000 y)...more
is 1/400 of Age of earliest sewing needle (30,000 y)...more
is 1/400 of Time since the earliest bread baking (30,000 y)...more
is 1/200 of Time since first humans in Americas (15,000 y)...more
is 1/50 of Age of earliest swords (3,700 y)...more
is about as big as Period of Halley's Comet's orbit (75.3 y)...more
is 2.5 x Lifespan of horse (30 y)...more
is 2.5 x Period of Saturn's orbit (29.5 y)...more
is 5 x Time since first iPhone launched (15 y)...more
is 5 x Lifespan of a cat (15 y)...more
is 40 x Period of Mars's orbit (1.88 y)...more

If this was a standard unit ...