WEBVTT 00:00.340 --> 00:06.370 Hello, my name is Typhoon, and in this lecture we are about to uncover the intriguing world of knot 00:06.370 --> 00:07.000 logic. 00:07.030 --> 00:11.500 This is a fascinating concept that is simpler than you might think. 00:11.500 --> 00:19.300 So imagine having it this magical mirror that shows the opposite of whatever you put in front of it. 00:19.330 --> 00:26.740 So buckle up as we embark on a journey to demystify this concept and understand how it works. 00:26.740 --> 00:30.520 So think of this knot here. 00:30.520 --> 00:31.990 Let's get it down. 00:32.200 --> 00:32.980 Knot. 00:37.510 --> 00:46.150 So think of this logic as a pair of glasses that you can wear to see things from a different perspective. 00:46.180 --> 00:53.590 Just like the glasses transform colors and shapes, so not logic transforms whether something is true 00:53.590 --> 00:54.850 or false. 00:54.850 --> 01:00.290 So it's like a spell that flips things around revealing the opposites. 01:00.310 --> 01:06.490 So in the realm of computers, not logic is like asking a question and getting the opposite answer. 01:07.510 --> 01:10.990 It's like asking, is it not raining? 01:11.020 --> 01:15.670 If the answer is yes, then it means it's not raining, it's sunny. 01:15.700 --> 01:20.500 So if the answer is no, then it's still raining, right? 01:20.500 --> 01:26.770 So note logic helps computers to understand the opposite of a given condition. 01:26.830 --> 01:32.320 Imagine you have a magical switch that can turn things on and off. 01:32.320 --> 01:36.730 And when you use not logic on the switch, it's like reversing the state. 01:36.730 --> 01:42.060 So if the switch is off in this case, off is zero. 01:42.070 --> 01:44.350 Here, let me write it down. 01:44.350 --> 01:46.900 So off here. 01:48.160 --> 01:50.110 Is equal to zero. 01:50.110 --> 01:56.680 And actually, yeah, we can also use this, but on we can use the green for it. 01:57.600 --> 02:00.840 But on here is. 02:01.640 --> 02:03.630 Equals to one, right? 02:07.100 --> 02:11.240 But we have the magical switch that can turn things on and off. 02:11.240 --> 02:16.720 So when you use not logic on the switch, it's like reversing the state. 02:16.730 --> 02:19.070 So if the switch is off here. 02:20.000 --> 02:25.490 Um, which is in this case is zero not logic turns it to on. 02:26.280 --> 02:27.810 It's like reversing the state, Right? 02:27.810 --> 02:32.130 So and if the switch is on here. 02:33.250 --> 02:41.620 Then not logic turns it off as if it's you are flipping the switch with a twist of a magic. 02:42.310 --> 02:46.090 And let's consider a locked door here and a special key. 02:46.780 --> 02:51.580 When you use the key to unlock the door, it's like saying not locked. 02:51.580 --> 02:57.320 And in other words, the door is not locked in its locked state anymore. 02:57.370 --> 03:00.940 So if you don't use the key, the door remains locked. 03:01.210 --> 03:08.880 The note logic helps us determine if the door is locked or not without even touching the key. 03:08.890 --> 03:16.240 And note logic is used in various ways in computers so it can change the state of a signal, like turning 03:16.240 --> 03:21.300 the light off it's on or turning it on if it's off. 03:21.310 --> 03:27.190 So it can help computers to make decisions based on the opposite conditions. 03:27.190 --> 03:30.480 Like, for example, if this is the. 03:30.730 --> 03:37.480 Let's actually name this mirror not and we are giving the on state but and after that we are returning 03:37.480 --> 03:44.140 the off right or we are giving the off state and we are returning the on right. 03:44.140 --> 03:45.070 So. 03:46.160 --> 03:53.530 And this is just like a magical mirror shows us the opposite of what we see, not logic. 03:53.540 --> 03:58.130 Help computers see the opposite of what's true. 03:58.130 --> 03:59.330 So there you have it. 03:59.330 --> 04:07.160 It's a comprehensive exploration of not logic and enhancing concept that brings a touch of magic to 04:07.160 --> 04:13.700 the world of computers, much like wearing those special glasses that show you a different view. 04:13.730 --> 04:18.850 So not logic helps computers see things from a different angle. 04:18.860 --> 04:21.470 Next time you across not logic. 04:21.560 --> 04:28.640 Remember that it's like asking a magical question that reveals the opposite side of things and keep 04:28.640 --> 04:35.780 on questing for knowledge and embrace the wonder of logic in the captivating universe of Peter's. 04:35.810 --> 04:37.310 I'm waiting you in the next lecture.