What is data representation?

Data representation refers to methods used to represent information in a computer, such as numbers, text, graphics, and sounds.

What is the binary number system and how does it differ from the decimal system?

Binary is base-2, using digits 0 and 1, while decimal is base-10, using digits 0–9. Binary is fundamental for computers.

How do you convert the binary number 1011 to decimal?

(1×2³) + (0×2²) + (1×2¹) + (1×2⁰) = 8 + 0 + 2 + 1 = 11 in decimal.

What is the significance of ASCII in data representation?

ASCII standardizes text representation, ensures compatibility across systems, and allows communication between devices.

How do you convert a decimal number to binary?

Divide the number by 2 repeatedly, record remainders, and read them from bottom to top.

What is the purpose of the Binary Coded Decimal (BCD) system?

BCD represents each decimal digit (0–9) using 4 binary bits, simplifying decimal calculations and digital displays.

How can you convert binary 11011 to octal?

Group as (011 011). 011 = 3, 011 = 3 → Octal equivalent is 33.

Fill in the Blank: In binary to hexadecimal conversion, digits are grouped in sets of __________ bits.

4.

True or False:

Ones’ complement is obtained by flipping all bits of a binary number.

True.

Describe the steps to convert a decimal number into hexadecimal.

Divide by 16 repeatedly, record remainders (0–9, A–F), and read from bottom to top.