Binary, Images and Sound

What number base is binary based on

• 2

• 1

• 8

• 16

How many bits in a byte?

• 8

• 16

• 1

• 2

How many bits are needed to represent the number 15 in binary

• 6

• 4

What is the binary representation of 17?

• 0001 0010

• 0001 0001

• 0000 1101

• 0010 0010

What is the binary representation of 32?

• 0010 0000

• 0010 0100

• 0011 0000

• 0010 0001

What is the denary representation of 0100 1111

• 59

• 79

• 69

• 49

What is the denary representation of 1101 0101

• 199

• 206

• 228

• 213

How many Bytes are in a Terabyte

• 1000 Kilobytes

• 1000 Megabytes

• 1000 Gigabytes

• 1000 Bytes

Why do computers use the binary number system?

• A CPU has 2 transistors

• To represent the 2 different states of transistors (on and off)

• To allow the CPU to be in one of 2 states

How many bits are used in ASCII?

• 16

• 1

• 7

• 8