help plz

Discussion in 'Homework Help' started by shetos13, Dec 21, 2008.

1. shetos13 Thread Starter New Member

Dec 21, 2008
5
0
i have problem
i have A/D converter that convert anloge input to 8 bit
input analog come from voltage divider variable circuit that input 12volt alwas and it output with range of 0 to 12volt
i need to know that what the analog voltage input to A/DC from output of A/DC that preduce that output without using D/AC
i convert the output to BCD .... can tell me how i know the input voltage from BCD value that i have??????????????

2. beenthere Retired Moderator

Apr 20, 2004
15,815
283
Your post is very hard to follow. Especially this:

i need to know that what the analog voltage input to A/DC from output of A/DC that preduce that output without using D/AC

The colors don't help much, either.

An 8 bit A to D has a maximum numeric output in binary. Dividing the full scale analog input by the A to D maximum value gives the resolution of each bit.

Be certain that the A to D has a BCD coded output and not binary. That will make an enormous difference.