1 00:00:05,210 --> 00:00:13,730 ‫Welcome to the new Them station on the RTG 7 board we have four different four digit 770 displays on 2 00:00:13,730 --> 00:00:14,920 ‫the breadboard. 3 00:00:14,960 --> 00:00:23,180 ‫The first one that it says I want is by we have input for the Alieu the signal we have and put B. 4 00:00:23,670 --> 00:00:29,100 ‫And the bottom two are used to represent the result of our earth take launching unit. 5 00:00:29,240 --> 00:00:36,950 ‫We also are tying each of the different segments through a 56 resistor into the J. 6 00:00:36,950 --> 00:00:39,750 ‫P Mom port of the RTG 7. 7 00:00:40,300 --> 00:00:49,940 ‫All the digits are controlled through 16 and then two and three or four transistors with a 470 ohm resistor 8 00:00:50,150 --> 00:00:55,900 ‫connected into the chip kit header on the RTC 7. 9 00:00:55,910 --> 00:01:02,420 ‫We also have three external slides switches that are used as the opcode for the Alieu. 10 00:01:02,690 --> 00:01:09,050 ‫We have our switch one which we're using for the add or subtract we have our switch 0 which is used 11 00:01:09,050 --> 00:01:11,140 ‫to select the different digits. 12 00:01:11,270 --> 00:01:20,110 ‫And we have different buttons buttons 0 1 and 2 are either adding or subtracting 1 10 and 100 and our 13 00:01:20,120 --> 00:01:24,480 ‫button 3 is used to execute this arithmetic logic unit. 14 00:01:24,560 --> 00:01:31,270 ‫So start out let's go ahead and start setting values or inputs A and B. 15 00:01:31,700 --> 00:01:39,130 ‫So if we start we're going to we're starting our input B and if I change my switch one down or so. 16 00:01:39,190 --> 00:01:39,930 ‫Exactly. 17 00:01:40,100 --> 00:01:42,800 ‫So here I have a negative one negative to 3. 18 00:01:42,800 --> 00:01:44,120 ‫So on and so forth. 19 00:01:44,120 --> 00:01:53,010 ‫So I set this up to positive for and we're going to go ahead and now change the value on our input. 20 00:01:53,330 --> 00:01:55,380 ‫So slight up or switch 0. 21 00:01:55,700 --> 00:02:01,550 ‫And just like with the with arm would be we can make it negative or positive which will go to a negative 22 00:02:01,550 --> 00:02:02,470 ‫value. 23 00:02:02,540 --> 00:02:05,430 ‫So make it a negative 3. 24 00:02:06,130 --> 00:02:13,700 ‫So right now in order to test our aone you we are going to perform different operations and there's 25 00:02:13,700 --> 00:02:19,720 ‫a control through the opcode instructions which are on these three slide switches. 26 00:02:19,750 --> 00:02:22,590 ‫So the first opcode is 0 3 zeroes. 27 00:02:22,590 --> 00:02:23,310 ‫So what set it. 28 00:02:23,310 --> 00:02:31,370 ‫So we have all reset to zero and this up card is going to take the value and place it in our result 29 00:02:31,370 --> 00:02:32,290 ‫register. 30 00:02:32,360 --> 00:02:36,160 ‫So pressing button three will see there are some negative 3. 31 00:02:36,230 --> 00:02:39,250 ‫Result is a negative 3 as well. 32 00:02:39,350 --> 00:02:45,230 ‫Our next is we're in a place we go 0 0 1 is going to take the value. 33 00:02:45,290 --> 00:02:51,570 ‫We place it in our all register so are pressing the button see that our form now moved. 34 00:02:51,590 --> 00:03:03,560 ‫The result register the next is 0 1 0 2 0 1 0 and this operation is going take a plus b. 35 00:03:03,590 --> 00:03:07,780 ‫So if we take a negative three plus four is a positive one. 36 00:03:08,030 --> 00:03:12,980 ‫Press a button and we see a result register as a value of positive one. 37 00:03:12,980 --> 00:03:13,690 ‫Now we get Z. 38 00:03:13,820 --> 00:03:19,300 ‫Our next stop is 0 1 1. 39 00:03:19,400 --> 00:03:22,770 ‫This operation is going to take a minus B. 40 00:03:23,150 --> 00:03:29,470 ‫So if you press a button three We'll see if we take are negative 3 and 6 x 4 will do negative 7. 41 00:03:29,630 --> 00:03:37,280 ‫So this is shown in our result register of this Alieu And we also have several other instructions have 42 00:03:37,290 --> 00:03:47,230 ‫a 1 0 0 0 1 0 0 press a button. 43 00:03:47,360 --> 00:03:51,800 ‫We set our Or rather our Procrit to Sir all to zeros. 44 00:03:51,950 --> 00:03:55,700 ‫If we go with a 1 0 1 1 45 00:03:58,430 --> 00:04:03,380 ‫0 1 this is going to set all the values to 1. 46 00:04:03,380 --> 00:04:09,550 ‫Now these are sine values that's going to create a negative 1 values by pressing button 3 you'll see 47 00:04:09,570 --> 00:04:12,600 ‫we have a negative one show up in our product register. 48 00:04:12,850 --> 00:04:16,540 ‫And so this is just a demonstration of how you can work. 49 00:04:16,590 --> 00:04:18,690 ‫And these are kids who went through. 50 00:04:18,800 --> 00:04:22,630 ‫You can add as many different instructions as you want to your age. 51 00:04:22,830 --> 00:04:28,000 ‫Are you now we only have three digits allocated for up to. 52 00:04:28,670 --> 00:04:31,400 ‫So we can only do up to eight different commands. 53 00:04:31,430 --> 00:04:38,320 ‫But if you'd make a larger OP could decide you could do a lot more different a lot more commands. 54 00:04:38,320 --> 00:04:42,980 ‫So this an example of the Alieu running on RTC 7 on board.