ne: Paper-1 lo A. Circle the correct answer How many select lines would be required for an 8-line-to-1-line multiplexer? 100t b 1. b) 4 d) 3 lo 2. If the number of n selected input lines is equal to 2m then it requires select lines. c) n d) None of the Mentioned t00 10050 What is the function of an enable input on a multiplexer chip? a) To apply Vcc c) To active the entire chip) To active one half of the chip b) To connect ground 0040 (For subtracting 1 from 0, we use to take a d from neighbouring bits. a) Carryrb) Borrow ) Not possible d) None How many outputs are required for the implementation of a subtractor? a) 1 Full subtractor is used to perform subtraction of a) 2 bits 6. b) 3 bits c)4 bits d) 8 bits 7. The output of a subtractor is given by (if X, Y and Zare the inputs) a) X AND Y XORZ b)X XOR Y XORZ c)X OR Y NORZ d) X NOR Y XOR Z s. A decoder converts n inputs to outputs d) n b) n2 c) 2 Which of the following can be represented for decoder? a) Sequential circuit c) Logical circuit s b) Combinational circuit d) None of the mentioned 10. Which of the following can be represented for Miltiplexer? a) Sequential circuit c) Logical circuit A priority encoder means that A. the lowest priority goes first. C. priority is programmed into the device. D. the lowest input has priority. b) Combinational circuit d) None of the mentioned 11. B. the highest input has priority. 12. Encoders are made by three a) AND gate b) OR gate c) NAND gate d) XOR gate