How computers count with only 0s and 1s · Visual bit display · Grades 5–8
Computers only understand two things: electricity ON (1) and electricity OFF (0). That's why everything in a computer is stored as binary — a series of 1s and 0s called bits.
This free interactive computer science tool introduces students to fundamental digital literacy and computational thinking concepts. In today's world, understanding technology is essential for every student, regardless of their future career path.
Coding and digital literacy tools help kids develop logical thinking, problem-solving skills, and creativity. These skills transfer to every academic subject. All tools are age-appropriate for elementary and middle school students and require no prior experience.
Follow the instructions in the interactive tool above. Experiment freely — there are no wrong answers when you are learning. Teachers can use this for Hour of Code activities or digital citizenship lessons.
Last reviewed: April 2026