Binary Intro

What is the point of binary?

• It represents how computers interpret electrical signals

• Because teachers like to make you do extra math

• Binary isn't a real thing

• Because it describes star systems

Binary is made up of which numbers

• 3 and 4.

• 0 and 1.

• 2 and 3.

• 1 and 2.

If a binary number ends with a 1, it must be...

• An odd number

• An even number

• A prime number

• The number 12

Convert 11111111 to decimal

• 255

• 245

• 235

• 225

Which of these are the correct place values for binary?

• 128,64,32,16,8,4,2,1

• 128, 68,34,12,6,4,2,1

• 1,0

• 0,1

How would you write the number two in binary?

• 1001

• 0001

• 0000

• 0010

Convert 128 to binary

• 10000000

• 01111110

• 10000001

• 11001100

How would you write the number 4 in binary code?

• 0100

• 0000

• 0001

• 0010

A group of 8 bits is known as a gigabyte.

• True

• False

8 bytes = 1 bit

• True

• False