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8 bit decoder

hi !
i am working on a circuit and i need to decode 8 bit binary number to
show that number to 7 segment BCD display.How can i do that ????
 
D

Dave Pollum

Jan 1, 1970
0
hi !
i am working on a circuit and i need to decode 8 bit binary number to
show that number to 7 segment BCD display.How can i do that ????

If you want to display BCD data (0 thru 9) on a 7-segment display,
something like a 7447 or CD4511 (or their modern equivalents) would
work. For 8-bits, you'll need 2 chips and 2 LED displays. If you
want to display hexadecimal (0 thru F), check out the Maxim ICM7212 (4
digits). I found the Maxim part by googling for "7-segment driver".
HTH
-Dave Pollum
 
S

samiam

Jan 1, 1970
0
hi !
i am working on a circuit and i need to decode 8 bit binary number to
show that number to 7 segment BCD display.How can i do that ????


I am doing something like this RIGHT NOW on a project I am working on.

I have two 16L8 PLD's and a table to decode the hex values.
I split the data bus into two nibbles and feed each to the PLD. The PLD
outputs drive the seven segments ... works like a charm
 
R

Rich Grise

Jan 1, 1970
0
I am doing something like this RIGHT NOW on a project I am working on.

I have two 16L8 PLD's and a table to decode the hex values. I split the
data bus into two nibbles and feed each to the PLD. The PLD outputs drive
the seven segments ... works like a charm

If he wants a BCD display, he'll need three digits to cover the range
0..255.

Cheers!
Rich
 
A

Andrew Edge

Jan 1, 1970
0
hi !
i am working on a circuit and i need to decode 8 bit binary number to
show that number to 7 segment BCD display.How can i do that ????

Your 7 segment BCD display accepts 4 bits of data.

You have 8 bits which means you need 2 of them.

A decoder. Ummmm. You could do without one. Get a 8 BIT Serial IN
Parallel OUT Shift register Chip. Connect the outputs to your 2 BCD
display chips.

You could get the same result by cascading 8 flipflops instead of the
shift register.

Andy
 

cs200939

Nov 20, 2010
7
Joined
Nov 20, 2010
Messages
7
I am stuck with the same problem.i have constructed a Fibonacci generator and the output is an 8 bit number.i attained this output with the help of two 4 bit binary adders and now i am stuck with the problem of displaying them on two 7 segments displays. Until now ive worked with only 1 7 segment display( i mean i know how to display 0 to 9 but dont know how to display 0 to 99:( ).Can anybody help me with that please.In detail.Thanks
 
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