Data Representation

Data Representation

Numbers, Text, Images

Representing Numbers

Binary to Decimal Conversion

Representing Real Numbers

Answer the next few questions to test your Data Rep skills

You will have 2 minutes to do each question

Multiple Choice

Convert the 8-bit binary number 00100010 to the decimal equivalent

• 66

• 30

• 34

• 52

Multiple Choice

Convert the denary number 83 to the binary equivalent

• 01001001

• 01010011

• 00101011

• 01010101

Multiple Choice

The notation for representing real numbers is known as

• Real Representation

• Fixed Point

• Floating Point

• Floating Representation

Fill in the Blanks

Replace the ? with the correct values.

The number 53263 has a mantissa of ? and an exponent of ?

You only need to type the 2 missing values not the whole sentence

Hint: use the ^ symbol for power

Representing Graphics

Bitmap Images

Vector Images

Multiple Choice

Which of these graphic file types uses lossy compression?

• JPG

• GIF

• BMP

• PNG

Multiple Choice

The number of bits needed to store a range of 4 colours is

• 1 bit

• 2 bits

• 3 bits

• 4 bits

Multiple Choice

The number of bits per pixel to allow you to represent different colours as binary codes is known as

• Bit Code

• Colour Range

• Colour Code

• Bit Depth

Multiple Select

Look at this Vector image and check all the attributes that apply

• Fill pattern dotted

• Fill colour orange

• Fill colour blue

• Fill pattern solid

Representing Text

Characters

Multiple Choice

Which of the following is a non-printable character?

• Space

• Semi-colon

• Exclamation Mark

• Backspace

Fill in the Blanks

What does ASCII stand for?