1) When was the first computer for calculations invented? a) 1945 b) 1955 2) What was the weight of the first computer for calculations? a) 30 tons b) 20 tons 3) How many times does the person usually blink per minute? a) 15-20 b) 20-30 4) How many times does the person usually blink per minute in front of the laptop? a) 7-9 b) 15-20 5) When was the first mouse invented? a) 1964 b) 1978

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