display 2digit number in 7-segment

[mahshid_2011]

Hello
i want to add two number that two number is bigger than 20 and I want to display that in the seven segment with proteuse software

my problem is i cant show 2 digit number in seven segment you can help me ?
I dont want to programming !

 

[grieblm]

Have a look at this thread.

 

[mahshid_2011]

my professer want to design this circuit with proteuse software and without code and programing
**broken link removed**
**broken link removed**
in this picture I can add to 1digit and show 1digit number in seven segment
now i want to display two digit number in 7-segment**broken link removed**

 

[mvs sarma]

this could be the configuration. the displays are common anode type. for Proteus they run but when in reality you may need pnp transistor buffers for the common anode drive.
the oscillator using Gate A should be around 25HZ or Higher. the R and C values have to be chosen accordingly.

 

[mvs sarma]

perhaps it is a Homework on digital logic gates and counters /decoders. the O P clearly stated that he/she has to tdo without code or programming.

 

[jimmy_tag]

you should search for bcd to seven seg decoder IC and interface it to seven seg display then.

 

[mvs sarma]

you should search for bcd to seven seg decoder IC and interface it to seven seg display then.

ha ha, you mean the O P ???

 

[jimmy_tag]

ha ha, you mean the O P ???

yup, he only wants to show the o/p on seven seg ..:-?

 

[mahshid_2011]

hello friends thank for your attention
i drew this circuit in the Protese and i did not answer - this circuit is not used the carry who can to help me?:sad:

View attachment ISO-8859-1__2digit display.pdfView attachment 7-segfull.rar

another way
how to use the carry bit and display it using a second decoder on a 2nd display?

 

[grieblm]

Just tie the carry bit to the least significant bit of the decoder and ground all the other input bits.

 

[mahshid_2011]

hi grieblm
I drew the circuit that you say As follows on file attachment

but it doesn't answer and for example it doesn't display 20+20

is the my circuit correct??

 

[mahshid_2011]

not someone help me:---?::?:

 

[mahshid_2011]

please help me:----(

 

[mahshid_2011]

please help me