What seminal event codified the nascent field of interactive computing in December 1968?

Answer

The Mother of All Demos, where Douglas Engelbart showcased the NLS.

The single most transformative event that codified interactive computing was 'The Mother of All Demos' in December 1968, where Douglas Engelbart demonstrated the revolutionary NLS (oN-Line System).

What seminal event codified the nascent field of interactive computing in December 1968?
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