binary to bcd - Electronic Circuits Projects Diagrams Free

jimbob jones · 8th November 2005, 04:51 PM

I need to convert a 8 bit binary output to 2 bcd numbers for driving 2 seven seg displaysfrom an 8051.If anyone could tell me how to do this as a software solution in the mcs 51 assembler language.

Electrix · 8th November 2005, 05:52 PM

:idea: Have a Look-Up Table

jimbob jones · 8th November 2005, 05:56 PM

POST DELETED BY MODERATOR!

Electrix · 8th November 2005, 06:01 PM

come again ?

U disgusting worm
** MODS please step in **

jimbob jones · 9th November 2005, 03:29 PM

I must apologise for my comment, a friend of mine was messing about and wrote that. I hope no one was offended by those silly remarks. Still is there anyone proficient in mcs 51 assembler language that can help me with the original problem.

**kinjalgp** · 9th November 2005, 07:15 PM

Here is how you do it:

Code:

;********************************************************************
; FUNCTION: BIN2BCD8
; PURPOSE:  CONVERTS 8-BIT NUMBER TO TWO BCD DIGITS
; INPUT:    A HAS 8-BIT NUMBER TO BE CONVERTED TO BCD
; OUTPUT:   BCD1 = HIGH NIBBLE
;           BCD0 = LOW NIBBLE
;********************************************************************
BIN2BCD8:
    MOV     R0,A
    ANL     A,#0FH
    ADD     A,#0F6H
    JNC     BB2
    ADD     A,#07H
BB2:ADD     A,#3AH
    XCH     A,R0
    SWAP    A
    ANL     A,#0FH
    ADD     A,#0F6H
    JNC     BB3
    ADD     A,#07H
BB3:ADD     A,#3AH
    MOV     BCD1, A
    MOV     BCD0, R0
    RET

jimbob jones · 9th November 2005, 07:57 PM

Good man. Thanks for the help, i was going to use a binary to bcd converter ,a 74185 but couldnt get one. Much better to do it with software. I am only beginning assembler so i was'nt fully familiar with all the instructions.

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8th November 2005, 04:51 PM	(permalink)
jimbob jones	binary to bcd I need to convert a 8 bit binary output to 2 bcd numbers for driving 2 seven seg displaysfrom an 8051.If anyone could tell me how to do this as a software solution in the mcs 51 assembler language. __________________ Top o, the morning te ya.

8th November 2005, 05:52 PM	(permalink)
Electrix	:idea: Have a Look-Up Table

8th November 2005, 05:56 PM	(permalink)
jimbob jones	binary to bcd POST DELETED BY MODERATOR! __________________ Top o, the morning te ya.

8th November 2005, 06:01 PM	(permalink)
Electrix	come again ? U disgusting worm MODS please step in

9th November 2005, 03:29 PM	(permalink)
jimbob jones	biary tto bcd I must apologise for my comment, a friend of mine was messing about and wrote that. I hope no one was offended by those silly remarks. Still is there anyone proficient in mcs 51 assembler language that can help me with the original problem. __________________ Top o, the morning te ya.

9th November 2005, 07:57 PM	(permalink)
jimbob jones	binary to bcd Good man. Thanks for the help, i was going to use a binary to bcd converter ,a 74185 but couldnt get one. Much better to do it with software. I am only beginning assembler so i was'nt fully familiar with all the instructions. __________________ Top o, the morning te ya.