0️⃣ Binary numbers

Unit 2 · Programming building blocks · 9 min

Computers store everything as 0s and 1s. Each binary digit, right to left, is worth 1, 2, 4, 8, 16… So 1011 = 8 + 0 + 2 + 1 = 11. Eight bits make a byte, covering 0 to 255.

Words in this lesson

• 二进制 (èr jìn zhì) — binary
• 字节 (zì jié) — byte

Project: Use your five fingers as 5 binary digits and count from 0 to 31.