I need to prepare for a presentation on the history of computing. Can you provide a brief overview of the key milestones in the development of computers from the 1940s to the 1980s? Your ENTIRE response should be in English, and in all lowercase letters. no capital letters are allowed. your response should contain at least 250 words. your answer must contain exactly 4 bullet points. use the markdown bullet points such as: * this is point 1.

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