doubt in rtc

actually you did not edited the code properly.
you removed many things which were necessary for the clock. I am giving you one example...
In your code above there is a mistake..
... Read Compelte post
Other Tags: mov   rtc   r7   r6   wave generator   
Posted by ajay_bhargav on Sun Apr 29 2007, 07:29 PM

HOW TO SET 5 DIFFERNET ALARMS IN THE DIGITAL CLOCK PGM

In the display RTC routine i am checking for the Alarm
PASS:	inc r1
	mov a,#0C7h
	acall command
	mov a,@r1
	mov 51h,@r1
	mov alarm_chk_min,@r1
	acall disp_val
PASS1:	inc r1
	mov a,#0c4h
	acall command
	mov a,@r1
	mov 52h,@r1
	mov alarm_chk_hour,@r1
	mov r4,a

here i am moving the current time to alarm_chk_hour and min registers so that i can use them while comparing.
... Read Compelte post
Other Tags: r1   mov   setb   chk   
Posted by ajay_bhargav on Fri Apr 27 2007, 07:07 AM

HOW TO SET 5 DIFFERNET ALARMS IN THE DIGITAL CLOCK PGM

setting alarm, this is just an example...

eg you create two variables, alarm_hr and alarm_min
alarm_hr will have the address where hr of the alarm is going to be stored and alarm_min will have the address where min of the alarm is going to be stored, so before calling the alarm set routine, you fill these variables with the addresses, where you want to store the alram.
say...
for alarm 1: hr is store... Read Compelte post
Other Tags: 24h   variables   alarm time   time is going   mov   
Posted by ajay_bhargav on Sun Apr 22 2007, 02:28 PM

Conversation

Sun Apr 30 2017, 05:49 AM
Lijin G Varghese
Can u send me the circuit diagram for Program to interface GSM Module with 8051 microcontroller (AT89C51) using PC and LCD
Sun Apr 30 2017, 05:48 AM
Lijin G Varghese
Program to interface GSM Module with 8051 microcontroller (AT89C51) using PC and LCD
Fri Apr 28 2017, 03:47 PM
SANDEEP T S
I need pcb wizard 3.5 version kindly send valid link of yours
Fri Apr 28 2017, 03:46 PM
SANDEEP T S
I need pcb wizard 3.5 version
ExperimenterUK
Mon Apr 17 2017, 11:56 PM
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Thu Apr 13 2017, 07:29 PM
Piyush Aughad
I want circuit & program for radar detection using Microcontroller 8051
Tue Apr 11 2017, 03:27 AM
Shabbir Ahmed
Hi Ajay ....hope you and your family all will be fine are you working on andriod aplications if yes then plz reply me
Sun Apr 09 2017, 06:33 PM
ATHULYA NAIR
Dear Sir, I need to know what are the complexity for programming in 8051 Microcontroller for three phase inverter?
Sun Apr 09 2017, 06:32 PM
ATHULYA NAIR
Dear Sir,
Sun Apr 09 2017, 04:43 AM
Rohit chandra joshi
Sir I need ur help urgently.i am trying to make pc controlled led scrolling display using 8051.when i am trying to generate hex file of the code that is given by pratik suthar.it gives the error Target not created Limit:0800h I am using keil uvision4 software. Even i have tried to burn the given hex file that is atteched with the code but my led are not glowing. Pls help me sir .i struck in this problem from last month and till now i am not able to short out the problem. Pls suggest me to solve the problem.mail me at [email protected] Thanks

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anshulece
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ExperimenterUK Avatar
Posted By ExperimenterUK
Mon May 01 2017, 12:42 AM
Sorry, that doesn't sound "normal".I think a re-in...
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Posted By Deepakvaishu
Fri Apr 28 2017, 11:18 AM
Yes proteus is loaded ,with all projects.....Once ...
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Posted By ExperimenterUK
Fri Apr 28 2017, 05:06 AM
Does Proteus load at all ?Does it only crash on c...
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Posted By Deepakvaishu
Wed Apr 26 2017, 06:59 AM
hello...I am getting an error when I am trying to ...
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Posted By ExperimenterUK
Tue Apr 18 2017, 10:52 PM
Thanks for the comment.Glad you got it working.
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Posted By Deepakvaishu
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Thank you very much...Today I got the output for a...
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Thu Apr 06 2017, 05:38 PM
Is it initially assigned as '0', and then when the...
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hello,Thanks for the attachment.I have gone throug...
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Posted By ExperimenterUK
Sat Mar 25 2017, 09:49 PM
I have attached code showing one method you could ...
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Posted By Deepakvaishu
Sat Mar 25 2017, 07:59 AM
I am using Keil and 8051 microcontroller