KwickClips Computer Systems · 42 sec · free
How many rows for two inputs?
Short answer. 4.
How do you avoid missing a row?
Count up in binary.
Q = A AND (NOT B)
| A B | NOT B | Q |
|---|---|---|
| 0 0 | 1 | 0 |
| 0 1 | 0 | 0 |
| 1 0 | 1 | 1 |
| 1 1 | 0 | 0 |
Remember
| Two inputs: 4 rows |
| Count up in binary |
How many rows does a truth table need? Two inputs give four rows. Row one gives zero. Row two gives zero. Row three: one AND one gives one. Row four gives zero. Two rules. Two inputs need four rows. Count up in binary.
This clip is from the full lesson: Logic Gates and Truth Tables — 9 minutes, with the tables, the quick answers and the whole lesson in text.
Useful for: CBSE Class 11 Computer Science (083), CBSE Class 11 Computer Science Essentials (083), ISC Class 11 Computer Science (868), ISC Class 11 Computer Science (868)
More KwickClips from this lesson
Voice-over is AI-generated; the script is written and checked by Kajal Ma'am. Confirm anything you plan around against your official board document. We never ask for a password or an OTP.