Data Representation Mix

Modern computers work in binary because it is easy to represent two states in simple electronic circuits. Binary is a...

• ...base 2 number system with 2 symbols

• ...base 6 number system with 6 symbols

• ...base 10 number system with 10 symbols

• ...base 4 number system with 4 symbols

What is the decimal representation of this binary number?

00111011

Hint: look at the last bit, is it odd or even?

• 58

• 102

• 59

• 220

Which of the following character sets can represent the most characters including characters in other languages?

• Unicode

• ASCII

What decimal number does the hexadecimal number E represent?

• 8

• 11

• 12

• 14

What is the smallest unit of data in a computer?

• byte

• nibble

• bit

• kilobyte

A group of 8 bits is called a...?

• byte

• bit

• nibble

• kilobyte

Why use hexadecimal instead of binary?

• Takes less space to display

• It takes up less memory

• It is faster for a CPU to process

A pixel is the smallest part of a bitmap image.

The colour depth determines...?

• how many colours each pixel can represent

• how many dots each pixel can represent

• how many pixels each dot can represent

• the maximum resolution of the image

What is the result of this binary addition: 0110 + 0101?

• 1011

• 1111

• 0111

What is 1011 1100 in hex?

• 15

• AD

• BC

• 77