Verify whether 4-3-1-1 code is self complementing or nt?

Question

Please provide codes for 0-9 decimal using 4311 code..i am little bit confused in it..I know the property that addition 9 makes it self complemetory..but how m nt understanding..plz help..

Answer 1

Yes It is a self-complementing code 

$n$	$4311$
$0$	$0000$
$1$	$0001$
$2$	$0011$
$3$	$0100$
$4$	$0101$
$5$	$1010$
$6$	$1011$
$7$	$1100$
$8$	$1110$
$9$	$1111$

1). There is property, of self complementing code, that,code of  $9's$ of a decimal number is obtained directly by changing $0's$ to $1's$ and $1's$ to $0's$

example: $9's$ complement of $2$ is $7$, change $0's$ to $1's$ and $1's$ to $0's$ in $4311$ code of $2$ , we will get $1100$, that is $4311$ code of $7$

2). Interesting thing I found that sum of weights of self-complementing weighted code makes a total of $9$, i.e, $4+3+1+1=9$, checked with other self-complementing codes as $2421,84-2-1,5211,$ and $642-3$.

Comments

Sir,How did you write that codes ?..please provide some link for method of writing that code..

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there is no as such way, but I get some pattern 

Try to keep $0$ at msb from $0$ to $4$, and try to keep $1$ at msb from $5$ to $9$. 

then, after that, try to fill from the side of lsb from $0$ to $4$, and try to fill from msb from $5$ to $9$.