IGCSE Unit 1

What Signal comes from your mouth?

• Digital

• Sound

• Voice

• Analog

In a ADC the A means _________

Computers use what kind of numbers?

• Binary

• Digital

• Real

• Integer

Which number is NOT a hexadecimal number?

• 0

• 43859384

• A823DH382

• ABCDEEA22FFF

What is the largest 7 bit number?

• 64

• 128

• 127

• 63

If you have 32 colors in a picture, how many bits do you need to represent the color?

• 5

• 4

• 6

• 7

Which one is a lossy image file?

• PNG

• JPG

• MAC

• BMP

If you shift a binary number to the right 1 bit, what happens?

• Add by 2

• Subtract by 2

• Multiply by 2

• Divide by 2

What is the name of a small piece of memory in the CPU?

• Register

• RAM

• Primary Memory

• Storage

If text is compressed with lossy compression .....

• Everything will be okay

• It will use less space

• You will lose information

• It may take more space