SCAS - BCA ANSWER SCHEMES

Answer Key Section A 1.     The 8421 code is a Binary Coded Decimal (BCD) code — one of the most common ways to represent decimal numbers in binary form. Binary Coded Decimal, or BCD, is used for converting decimal numbers into their binary equivalents 2.     The Hexadecimal Number System (often called Hex ) is a base-16 number system. It uses 16 unique symbols to represent all possible values for a single digit. 3.     Overflow occurs in binary addition when the result of an addition exceeds the range that can be represented with the available number of bits. 4.         A B SUM CARRY 0 0 0 0 0 1 1 0 1 0 1 0 1 1 0 1           5.     Final BCD Result = 1001 1000 6.  ...