Number bases

Question 1

What is the decimal system?

Answer 1

Is the system that uses base 10. For example:
253 = 200 + 50 + 3
2(100) + 5(10) + 3(1)
2(10 ²) + 5(10 ¹) + 3(10 ⁰)

Question 2

What is the binary system?

Answer 2

The system that uses base 2. This system only has 2 digits 1 and 0. It can be referred to as binary digits or bits for short.

Key numbers to remember 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024