G11- Data Representation

Multiple Choice

What is data representation?

• Data representation is only about graphics and images.
• Data representation is the process of deleting unnecessary information.
• Data representation refers to the physical hardware of a computer.
• Data representation is the method of formatting and storing information in a computer system.

Multiple Choice

Which system is used to represent data in computers?

• Decimal number system
• Octal number system
• Hexadecimal number system
• Binary number system

Multiple Choice

Convert Denary/Decimal to Binary 87

• 1010110
• 1101011
• 1010111
• 1001111

Multiple Choice

Convert Binary to Denary 110011

• 49
• 50
• 52
• 51

​To convert the decimal number -7 to binary, follow these steps:

​Step 1: Convert 7 to binary (positive value)
The binary representation of 7 is: 7 = 111
Step 2: Represent the binary value in 8-bit format :
7 = 00000111
Step 3: Find the two's complement for negative representation Invert all bits:
00000111 → 11111000
00000111→11111000
Add 1: 11111000 + 1 = 11111001 ​

Multiple Choice

Find the value of -15 in 8 bit binary conversion

• 11110010
• 11111111
• 00001111
• 11110001