A BCD Display is defined as which concept?

• A. A number system that uses groups of 4 digits to represent decimal values
• B. A decimal display using groups of digits
• C. A binary display using 4-digit chunks
• D. A hexadecimal display

Answer: (A)

BCD is Binary-Coded Decimal, where every decimal digit is represented by a four-bit binary pattern. This means you take a decimal number, split it into its digits, and encode each digit separately using four bits. For example, the decimal 45 becomes 0100 for 4 and 0101 for 5, combined as 01000101. This approach uses groups of four bits to display decimal values, rather than representing the whole number in pure binary or as hexadecimal. So the concept described is precisely using four-bit groups to encode decimal digits.