The correct answer is: A. decimal
BCD stands for Binary-Coded Decimal. It is a way of representing decimal numbers using binary digits (bits). Each decimal digit is represented by a group of four bits, with each bit having a value of 0 or 1. This means that BCD can represent any number from 0 to 9999.
BCD numbers are useful whenever decimal information is transferred into or out of a digital system. For example, when you enter a number into a calculator, the calculator converts the number to BCD before performing the calculation. This is because the calculator’s internal circuits are designed to work with binary numbers.
The other options are incorrect because they are not ways of representing decimal numbers.
- Option B: Binary is a way of representing numbers using only two digits, 0 and 1.
- Option C: ASCII is a code that represents characters using numbers.
- Option D: Hexadecimal is a way of representing numbers using sixteen digits, 0-9 and A-F.
I hope this explanation is helpful! Let me know if you have any other questions.