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7 segment display

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genetica

New Member
I got a 4 bit code which i like to output to a 7segment display. Or i can use a 1-out-of-10 code to output to the 7segement code.
The 4bit code is not BCD code.
Display Binary 1-out-of-10 code
0 1110 1000000000
1 1101 0100000000
2 1011 0010000000
3 0111 0001000000
4 0001 0000100000
5 0010 0000010000
6 0100 0000001000
7 1000 0000000100
9 0000 0000000001
8 0000000010
The rest of the binary should display an 8

Thanks.
 

ericgibbs

Well-Known Member
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Last edited:

john1

Active Member
For some strange reason that is the same as an arrangement i used some
years ago for running a seven segment device.

I arranged for all the segments to be on normally.

When a single high occurred, it would extinguish some segments
accordingly, to make the appropriate display.

I did that with some diodes to the segments, so zero had one diode
over to the middle segment driver.

Two had a couple of diodes, top left and bottom right drivers.

Interesting that you should mention the eight, that had no diodes,
cos for an eight all the segments are lit.

Regards, John :)
 

genetica

New Member
I actually looked at the diode idea. It then uses 22 diodes thats alot for the space it uses maybe a way to minimize the circuit?
 

ericgibbs

Well-Known Member
Most Helpful Member
genetica said:
I actually looked at the diode idea. It then uses 22 diodes thats alot for the space it uses maybe a way to minimize the circuit?
hi,
Are you able to write a program for a PIC?:)
 

ericgibbs

Well-Known Member
Most Helpful Member
genetica said:
No sorry. I cant program PIC.
hi,
Is the 'grey' to bcd convertor logic shown in the link I posted suitable.?
Its output would drive a 7447 bcd to segment driver ic?

This conversion question comes up quite often, the best way is a 16F628A PIC, its a pity you cant get someone to program a PIC for you, its the simplest and smallest method I have seen.

Is this related the 7seg driver thread you have posted?
 

genetica

New Member
Yes its is related. I got someone to program the PIC thanks alot ill anyway then go with your Eprom suggeston thanks.
 
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