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August 1, 2025
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jul 3, 1961 - IBM Introduces 1400 series

Description:

The 1401 mainframe, the first in the series, replaces earlier vacuum tube technology with smaller, more reliable transistors. Demand called for more than 12,000 of the 1401 computers, and the machine´s success made a strong case for using general-purpose computers rather than specialized systems. By the mid-1960s, nearly half of all computers in the world were IBM 1401s.

Added to timeline:

Date:

jul 3, 1961
Now
~ 64 years ago