SCAS - BCA ANSWER SCHEMES

  ANSWER KEY 1.     Explain the non-positional number system with example? A non-positional number system is a type of number system where the position of a digit does not affect its value. Each symbol or digit in the system has a fixed value, regardless of where it appears in the number. EG: - ROMAN NUMBERS 2.     Explain the terms 1’s complement and 2’s complement? The 1’s complement of a binary number is obtained by flipping all the bits: Change every 1 to 0 Change every 0 to 1   Example: Binary number: 0101 (which is 5 in decimal) 1’s complement: 1010 The 2’s complement of a binary number is obtained by: Taking the 1’s complement of the number Adding 1 to the result 🔹 Example: Binary number: 0101 (5 in decimal) 1’s complement: 1010 Add 1: 1010 + 1 = 1011 2’s complement: 1011 (which represents –5) 3.     (a) Convert the hexadecimal number 5C2 to decimal?       =(5×16^2...