Design Of Digital Circuits Using Verilog

1. Which is correct assignment for two input and gate shown in Fig.1?
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2. Which is correct assignment for tri state buffer shown in Fig.2
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3. Which is not a logical operator?
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4. Which is/are bitwise operator(s) ? A) & B) ~ C) | D) ^
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5. Which is not a correct statement? (A) >> is a shift right operator. (B) & is a reduction operator (C) === is a case equality operator (D) Y = (sel) ? A : B; is an example of conditional operator

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6. Which is/are correct verilog code for Fig.3?
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7. Which is correct verilog code for Fig.4?
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8. Which is not a correct port assignment for a module?
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9. Which is/are not correct escaped characters? (A)\n for new line (B)\t for new tab (C) % for % (D)\for\ (E)\s for string
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10. Which is/are showing incorrect result for given operands and operator ? (i) 1 > 0 -> 1 'b1 x 1 <= 0 -> x 10 < z -> x (ii) 4'b 1z0x == 4'b 1z0x -> x 4'b 1z0x != 4'b 1z0x -> x (iii) One multi-bit operand -> One single-bit result a = 4'b1001; c = |a; // c = 1|0|0|1 = 1 (iv) 4'b 1z0x === 4'b 1z0x -> 1 4'b 1z0x !== 4'b 1z0x -> 0
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