Types of numbers for computing

1. Numbers

2. Types of numbers

3. Binary
• Computers store all numbers in base 2
• Base 2 equates to on and off state of transistors
• This is a current physical constraint of computers.
• Computers convert numbers to base 10, 8, and 16 for our
benefit.

4. Integers
• Integers come in two varieties (unsigned and signed)
• Signed integers lose one bit of precision to store sign.

5. Floating Point Numbers
• Built to deal with fractional numbers
• Really fast
• Basically scientific notation

6. How they’re stored
Sign Exponent Mantissa / Significant

7. Floats vs Doubles
Sign Exponent Mantissa / Significant
1bit 8 bits 23bits
Doubles: 1 / 11 / 52