Help me display voltage on 7 segment LEDs using 89c51 with C51

[narithota]

hi sir
iam using 89c51 with C51 compiler
i want display voltage on & four 7segment leds.I converted anlog voltage to digital
using ADC.now i want display voltage on & 7-segment leds like
0.001v
0.002v
.
.
.
5.000v

iam using only one port P1 conacted to the 7-segmentLEDs and i conacted
4 transisters to the port-P2 ( P2.1 p2.2 p2.3 p2.4 ).
how to selact the transister according to voltage
pleace give one C program on this logic

Thanks.

narithota

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[Help]

Re: 7 segment

Hi narithota,

You can refer to this

**broken link removed**

it might help you some of the question...

Regard,
Help

 

[seadolphine2000]

Re: 7 segment

You have to decode the ADC binary output to be able to use the 7-segments.
You can do this either by software or by using another chip "7-segments decoder".

Here you are a 7-segments decoder.

 

[yogi]

7 segment

for AVR microcontroller, there is some tutorials and codes available on the book

MY EXPERIENCE IN PROGRAMMING AVR MICROCONTROLLER IN C USING WINAVR
you can get it from yahoo group-booksbybibin
https://groups.yahoo.com/group/booksbybibin/

 

[chkhor2005]

Re: 7 segment

the coding:
mov a,p2
mov b,#10
div ab
mov r3,b
mov b,#10
div ab
mov r2,b
mov r1,a