[Answer] What upgrade replaced vacuum tubes in computers in the 1950s?

Step 1 : Introduction to the question "What upgrade replaced vacuum tubes in computers in the 1950s?"

...The change to transistors was one of the biggest advancements in computer technology history. Tom Kilburn’s team at Manchester University unveiled a prototype transistorized computer on November 16, 1953, which proved to be a success. These switches completely replaced vacuum tubes by the 1960s, allowing for smaller and cheaper computers to be produced. This led to complex circuitry in many electronics, like the transistor radio.

Step 2 : Answer to the question "What upgrade replaced vacuum tubes in computers in the 1950s?"

Transistors:

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