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[SOLVED] basic questions in digital electronics

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anudeep@semicon

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In a 2s complement of binary number consists of 8 bits having the value y =y7 y6 y5 y4 y3 y2 y1 y0.

1:-if logic variable n required that has the value 0 when y is zero or positive and 1 when y is negative write an expression for variable in terms of y

2:-logic variable E required that has the value 0 when even and 1 when odd number .write an expression for variable E interms of y

3:-explain with the help of a diagram under what conditions the sum of two positive numbers will become a negative

hi guys try to solve it
 

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