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Magnetic-core memory was invented in ____________

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Magnetic-core memory was invented in ____________

(a) 1946

(b) 1948

(c) 1947

(d) 1945

The question was posed to me in class test.

My question is taken from Random Access Memory topic in chapter Memory Devices of Digital Circuits

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Correct option is (c) 1947

Explanation: Magnetic-core memory was invented in 1947 and developed up until the mid-1970s. It became a widespread form of random-access memory, relying on an array of magnetized rings. RAM is a volatile memory, therefore it stores data as long as power is on. RAM is also known as RWM (i.e. Read Write Memory).

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