NUMBERS IN THE DIGITAL WORLD
Unlike analog signals, numbers have a concrete value that can be reproduced.
Decimal (Base10)
10 Values (0–9)
Hexadecimal (Base16)
16 Values (0–F)
9 = 9 (dec)
A= 10
B = 11
F = 15
F1 = 16
Hexadecimal (Base16)
16 Values (0–F)
= 612 (base10)
Tetrasexagesimal (Base64)
64 Values
(numbers + upper case + lower case + '/' + '+')
Binary (Base2)
2 Values (0–1)
= 612 (base10)
Simple choices mean faster decisions and less possibility for error.
Computers can make only very 'stoopid' decisions between 2 things.
But this is a good thing...
Very complex things are built from many simple, carefully ordered decisions.
If you like pizza, which vegetables do you like on it?
- Do you like pizza?
- Do you like vegetables on pizza?
- Peppers?
- Black Olives?
- Green Olives?
- Rutabaga?
- Mushrooms?
- BONUS QUESTION: Are mushrooms your favorite?
The human judgement– and responsibility– is the programming of the questions, and dealing with the results.
NUMBERS IN THE DIGITAL WORLD