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Counting in ones, and writing down numbers in ones is called unary. It is called base1. This means 1 is the highest, and only, mark you can make before you need to add another unit.
1 ★ | 2 ★★ | 3 ★★★ | 4 ★★★★ | 5 ★★★★★ |
Below is a really complicated looking table for a really simple thing - counting objects one at a time.
This kind of table is more helpful when the numbers get harder.
1*1*1 | 1*1 | 1*0 | Expanded value of UNARY | Decimal | |
1s | 1s | 1s | 10s | 1s | |
0 | 0 | 1 | 0 + 0 + 1 | 0 | 1 |
0 | 1 | 1 | 0 + 0 + 1 | 0 | 2 |
1 | 1 | 1 | 1 + 1 + 1 | 0 | 3 |