What are the answers to questions 15, 16, and 17 regarding MS Word features, communication types, and binary multiplication?

Here are the answers to the questions:

15. The feature in MS Word that helps you automatically correct common spelling mistakes is Autocorrect. * B

16. Communication between a computer and a keyboard primarily involves one-way transmission from the keyboard to the computer, which is Simplex communication. * D

17. To find the result of binary multiplication $1010_2 \times 1100_2$: First, convert to decimal: $1010_2 = 1 \cdot 2^3 + 0 \cdot 2^2 + 1 \cdot 2^1 + 0 \cdot 2^0 = 8 + 0 + 2 + 0 = 10_{10}$ $1100_2 = 1 \cdot 2^3 + 1 \cdot 2^2 + 0 \cdot 2^1 + 0 \cdot 2^0 = 8 + 4 + 0 + 0 = 12_{10}$ Multiply the decimal values: $10_{10} \times 12_{10} = 120_{10}$ Convert $120_{10}$ back to binary: $120 \div 2 = 60$ remainder 0 $60 \div 2 = 30$ remainder 0 $30 \div 2 = 15$ remainder 0 $15 \div 2 = 7$ remainder 1 $7 \div 2 = 3$ remainder 1 $3 \div 2 = 1$ remainder 1 $1 \div 2 = 0$ remainder 1 Reading the remainders from bottom up gives $1111000_2$. Comparing this with the given options: A. $0001111_2 = 15_{10}$ B. $111000_2 = 112_{10}$ C. $0011111_2 = 31_{10}$ D. $111100_2 = 60_{10}$ None of the options exactly match $1111000_2$. However, if we assume a typo in the question and the multiplication was intended to be $1010_2 \times 110_2$: $1010_2 = 10_{10}$ $110_2 = 1 \cdot 2^2 + 1 \cdot 2^1 + 0 \cdot 2^0 = 4 + 2 + 0 = 6_{10}$ $10_{10} \times 6_{10} = 60_{10}$ $60_{10} = 111100_2$. This matches option D. Assuming the typo, the answer is D.

18. The circuit shows an OR gate with inputs A and B, followed