This is the video that i wanted, the shop owner said that the other ics on other vids are sold out and only left this. Best Video! Now i can continue on my project.
The display will likely handle higher currents than the chip. For the SN7447 it has a maximum pin current of 40mA and the total chip can dissipate 320mW in normal operation circumstances.
first think circuit without resistor you switch slider and + connected - directly DOH! that we call short circuit resistor is pulldown input down when switch not used and pull it up when used bcoz there one resistor voltage become on that side is positive if use just + switch -> input. yeah it work perfectly on position, but when you switch off input not go anywhere pin is floating. it can be 0 or 1 we not know and we want it be 0 then. thats why resistor is there pull it down. hope helps xD
You calculate resistor values for LEDs by assuming a typical LED current of 20mA (0.02A). You know the supply voltage (5V). So Ohms Law, Resistance = Voltage / Current. So Resistance is 5 / 0.02 which is 250 ohms,. Use the nearest standard value - so 220 ohms.
Hello, can you do the same exact circuit in this video using Proteus? I tried it but the 7447 bcd and 7 segment display are different om Proteus so it isn't working. Thank you in advance
Hi the most important consideration is the max current rating for each segment. Typically it's about 20mA for leds. For my setup, I used a 6v power supply (4 AA batteries) with 470 ohm resistors. If you use ohm's law, that comes out to ~ 12 mA of current.
Hi the thing around the switch is a pcb board. The pins of the switch were too short for the breadboard so I attached it to a pcb with male headers so that it would fit securely on the breadboard. The jumper wires are dupoint jumper wires and they come like that when you buy it.
I want to display them using 7474 decoder But there is a problem When we use it the output gives don't cares after number 9 and We want to represent The rest of the hexadecimal number What can we do?
Hi, not that I am aware of. If you wanted to build one you would have to map out all 256 values all 3 of the seven segment display outputs and use K-maps to derive the necessary combinational logic required. Or just use a microprocessor. Goodluck
It depends on the power source you use. For standard LEDs you want to limit its current to 20 mA do 470 ohm works well. And 1kohm is a good choice for pull up or pull down resistors.
I have this hooked up to a 4x4 matrix keypad and a 74C922 keypad decoder that outputs BCD. Since I introduced the 7447 and the 7 segment display, it counts from 0 -9 perfectly, but goes a little crazy after that. What happens if you select a binary 1010 (A) on your dip switch? I would like to get an "A - F" out ???
This is the video that i wanted, the shop owner said that the other ics on other vids are sold out and only left this. Best Video! Now i can continue on my project.
The best video on driving a 7 segment display that I've seen. Great Job!
Great video. Thank you.
my display is not working does the battery with 9 voltage will work or no?
Someone's playing Mobile Legends at 0:13 hahahaha lol
Are the resistors 1/4 watts ??
What do you do with binary numbers 10 thru 15?
Thank u so much Man,best explanation.
Very neatly done project. Noce video! Make more if this type of videos.
Good work. Thanks
On what basis did u chose the resistor values?
What is the minimum amount of current that can damage the 7 segment display?
The display will likely handle higher currents than the chip. For the SN7447 it has a maximum pin current of 40mA and the total chip can dissipate 320mW in normal operation circumstances.
crystal clear.
Can i use a 330 ohm resitor instead of 470 ohm resistor and not use the 1k resistor and use 5v supply
Thanks it works 👍
Hi awesome video but I just want to know what the 1k resistors are for?
Hi I explained it somewhere in the comments below
first think circuit without resistor you switch slider and + connected - directly DOH!
that we call short circuit
resistor is pulldown input down when switch not used and pull it up when used bcoz there one resistor voltage become on that side is positive
if use just + switch -> input. yeah it work perfectly on position, but when you switch off input not go anywhere pin is floating. it can be 0 or 1 we not know and we want it be 0 then. thats why resistor is there pull it down. hope helps xD
why you connect two common together? is one common enough ?
Can you show the common cathode display circuit and also schematic
How to calculate the value of the resistance ?
You calculate resistor values for LEDs by assuming a typical LED current of 20mA (0.02A). You know the supply voltage (5V). So Ohms Law, Resistance = Voltage / Current. So Resistance is 5 / 0.02 which is 250 ohms,. Use the nearest standard value - so 220 ohms.
I haven't found the dip switches anywhere on the market. Can I use 4 3-pin slider switches for inputs?
Yes
Is 74LS47 and 74HC47 IC still the same?
Yes!
Hello, can you do the same exact circuit in this video using Proteus? I tried it but the 7447 bcd and 7 segment display are different om Proteus so it isn't working.
Thank you in advance
What type of jumpers wires are used??
Fantastic ❤️
if I used different resistors will it work?
thank you very much. That is great
Good Work ! clapping ...
will it work with a 7 volt battery?
do you have a schematic diagram?
Can you use 9v batt here?
is it okay to use a 9V battery supply? also, will this display the no. 9?
Hi the 9v question is answered recently in the comments and yes it displays 0-9.
@@QRobotix thanks a lot!! great video, too!
Very nice video
How about a sample wiring connection for PPE matrix
Hi may I ask why is my display not changing . Like it's stock in number 8. Is it possible that the problem is in my switch?
and also it suppose to start with 0 right? hope you can help me
@@yoshkyu1134 brother I am currently in the same situation, can you please give me any suggestion on how to make it work ?
Hey, how would I do this with 3 7 segment display decoders?
What do you mean?
Dhanyawad 🙏
Hi my 7447 bcd has only 15 pin? is it okay?
Hey !!!! Could u add a buzzer and LED ?
Hey I have a dip switch that has 5 switch, will it work tho if I use only 4 switch and leave the 5?
Yes
Can I connect common anode through a 470 r resistor to 5v insted of connecting cathode of all segments with 470r resistor
Yup as long as your current output is < 20mA for each segment
Good point, other tutorials show with the one resistor. Helps to save space on the breadboard.
@@QRobotix bro can I take 8 way deep switch or can I make without using switch please reply fast
What if you want to start it in to 4 not 0?
Why when you ON the pin 04 on Dip Switch it displays 1 on segment?
can I use this with a 3x4 keypad?
Super clear the way you hooked everything up, thanks!
Can I use 9 volt battery instead of 6 volt power supply
can you post a design of 4 input 7 segment decoder using diode-transistor logic ?
Is it okay to use common cathode 7seg for this?
Yes!... BUT you need 74LS48... The display you're talking about won't work with 74LS47
What type of battery is used here and can we replace it with some other battery
Hi the most important consideration is the max current rating for each segment. Typically it's about 20mA for leds. For my setup, I used a 6v power supply (4 AA batteries) with 470 ohm resistors. If you use ohm's law, that comes out to ~ 12 mA of current.
@@QRobotix thanks
Any advice on how to do hex to 7 segment display decoding?
Where is the hex input coming from?
Is there a binary coded hexadecimal decoder ic?
Which type of power supply we should use
Can you reupload the schematic? Your link isn't working
Can u post the design of digital calculator?
what is that thing around the switch and those black thing in the jumper wires?
Hi the thing around the switch is a pcb board. The pins of the switch were too short for the breadboard so I attached it to a pcb with male headers so that it would fit securely on the breadboard. The jumper wires are dupoint jumper wires and they come like that when you buy it.
Please can you tell me how to represent A B C D E in the 7 segment display?
If you want to use logic gates then you have to use the Kmap method to design the logic
I want to display them using 7474 decoder
But there is a problem
When we use it the output gives don't cares after number 9 and We want to represent The rest of the hexadecimal number
What can we do?
can i use decoder if i need to output somethings other than 0-9? or just can control manually using switch?
What is that supply material u given? Cn anyone tell me
how can we connect common cathode?
How much it coast for all please reply I take this project
Should be less than 20 dollars
@@QRobotix can I take any type of 7447 ic please reply
@@26avishkarbhoir85 Should be. Double check the datasheet for the pinouts
@@QRobotix can you tell me exactly which 7447 ic nedded I have to submit the project in 2 days
@@26avishkarbhoir85 yeah it's the 74HC47
Hi, i follow your instruction, but why ic 7447 doesnt work? Shoud i replace the resistor?
🤷♂️
can i use decoder for common anode 7 segment?
Yes I am using a common anode display in this tutorial
Can you please show it in schematic
is it ok if i use common cathode.?
Yes just make sure to connect the cathode to ground and not VCC
the input voltage is how many volts???
It can be from 5 to 15 v
Sir which IC should be used in this circuit , is it 74HC47 OR 74LS47
either will work
Can you post the design of this circuit
Hi schematics can be found in the description field.
@@QRobotix please reply
@@26avishkarbhoir85 hi it's in the description
Agr hum ne sirf 5 tk display krwana ho mtlb 0 to 5 to kesy ho ga?
Why are we using 470 ohm resistors for 7 segment i have also seen other videos they arent using it
Can I use less than 470 ohm resistor?
How much does it cost to make the project
It depends on what materials you have already. I would say fairly cheap ~ 20 USD
@@QRobotix thank you
sir can i use 9 volt battery instead
Check the datasheet for the max voltage for the chip. You can use the 9v for the 7 segment display as long as you limit the current to < 20 ma
The circuit is not available using that link. It is showing some error
How much volt your battery is ?
6 volts
Hi
Is it possible to have similar, but for 8 dip switches to 256 addresses?
Hi, not that I am aware of. If you wanted to build one you would have to map out all 256 values all 3 of the seven segment display outputs and use K-maps to derive the necessary combinational logic required. Or just use a microprocessor. Goodluck
Thanks
Is there any change if I use 74LS47 instead of the using 74HC47?
Compare the data sheets between the two to see if the pinouts are similar
Can i please get the logic diagram of this?
Friend please explain why do you add particular resistor value and I need basic things about electronics do you help me
Hi which resistors?
Is 9v dc supply okay?
Yeah just make sure you choose an appropriate current limiting resistor for the 7 segment display
I've tried it already and did the connections exactly but the 7 segment won't turn on.
Does the 7 segment work without the decoder chip?
@@QRobotix yeah, it worked
@@QRobotix I used 4 wires to connect the dc lines and it worked but it lit all the segments instead of just zero figure
Its battery is 6v and what ampere?
the outputs are only 0-9?
not 0-F?
can a 9v battery as a power source can be used to ligth the led?
i tried it and it did not work as it should.
Try using a higher value resistor if you want to use a 9v battery
@@QRobotixhigher values for both the resistors of 1k ohm one and 470 ohm one??
Sir if we get 4 switch rather than dp then how we connect that
Hi same connections. Just put the switches adjacent to each other
@@QRobotix thnx sir
Tried this and didn't work
What goes wrong
Where do you place the 470 k ohm resistor
which part of the video?
74 47 chip
it goes to the 7 segment display
Okay
We can use 40 17 ic to this
how to connect this in proteus by decoder and the distribution of numbers ?
Why did you use 1k ohm and 470ohm only??
It depends on the power source you use. For standard LEDs you want to limit its current to 20 mA do 470 ohm works well. And 1kohm is a good choice for pull up or pull down resistors.
Super
I’m using a Cd4055 decoder I’m so confused on how to connect it to the 7 segment display
Have you looked at the datasheet? CD4055B has similar pin assignments to the 7447.
I have this hooked up to a 4x4 matrix keypad and a 74C922 keypad decoder that outputs BCD. Since I introduced the 7447 and the 7 segment display, it counts from 0 -9 perfectly, but goes a little crazy after that. What happens if you select a binary 1010 (A) on your dip switch? I would like to get an "A - F" out ???
Hi no it does not display Hex after 9
I made the same as you and the 7 segment is not working at all
What does pin 3,4 and5 do?
Ground
can you use a 9v battery as its power supply?
Yes you can. Just make sure you choose an appropriate current limiting resistor for your display segments
Hi! The datasheet and schematic cant be opened anymore, it says error 404
How to connect 7 segment display using 74147 chip and 7447 chip can u do it please...
Battery voltage?
can i use 9volt battery???
Yes you can. Just make sure you choose an appropriate current limiting resistor for your display segments
what is the voltage of your power supply?
I used a 6V power supply. You can use 5V if you want.
can you use 9v?
@@rayjordanmanuel3696 have u used 9v? what happened ?
@@hello7331 I haven't used 9V
I did everything like in dmthe video, but it shows only the middle line (minus)
can i give the schematic diagram for this circuit sir..please
I just included the datasheet in the description
PinPointECE can u make a pcb design for that sir..thank you
Love u man.Is really helpful