01101000 01100101 01101100 01101100 01101111 Bonus point if you write out what it says above in your comments section after you post your activity! Well done Alessandra who was the only one to crack it last time. All computer data is represented using binary. Everything! Images, numbers, letters, etc. Binary uses a system that uses only 1's and 0's (on/off). Binary digits (a bit) can be grouped together in a set of 8 to form a byte (8 bits in a byte). What be my video to see what’s happening in today’s lesson.