KwickClips Computer Systems · 40 sec · free
Where do you start adding binary numbers?
Short answer. From the rightmost column.
What is 1 + 1 in binary?
10, so write 0 and carry 1.
Binary addition
| Add | Sum | Carry |
|---|---|---|
| 0 + 1 | 1 | 0 |
| 1 + 1 | 0 | 1 |
| 1 + 1 + 1 | 1 | 1 |
Remember
| Start from the right |
| Carry 1 to the left |
In binary, is one plus one really one zero? Yes. Zero plus one is one. One plus one is zero, carry one. Three ones make one, carry one. Remember. Start from the right. Carry one to the left.
This clip is from the full lesson: Binary Arithmetic: Addition, Overflow, Two's Complement and Shifts — 6 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: ISC Class 11 Computer Science (868), Cambridge IGCSE Grade 9 Computer Science (0478), Cambridge IGCSE Grade 10 Computer Science (0478), Edexcel GCSE GCSE Computer Science (1CP2)
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