help with the code of digital alarm clock/ thermometer

[beny]

 I’m building the  clock/ thermometer project . I’m using the code and it work fine, but I need more than one alarm and more than one output; for example this is what I need three different outputs, the first one for alarm 1 and 2, the second one for alarm 3 and 4, and the last one for the countdown (or an alarm by hours for example every 72 hours or 120 or 24). Like I said I’m a not good in programming that why I consider myself a beginner, but on the other hand I’m good with logic and gates so I create a circuit using a combination of OR, NAND,  XOR and some d and jk flip-flops to make different alarms sound for each alarm. And it will make a mix once the countdown reach it reset.

any one able to help me  update the code or Explain to me if this is possible or not.

I have a ds12887 RTC available for the project if it makes things easier or more efficient. 

Thanks alot and I appreciate all the help.

here is the link:

http://www.engineersgarage.com/microcontroller/8051projects/digital-clock-with-digital-thermometer-AT89C51

http://www.engineersgarage.com/microcontroller/8051projects/alarm-clock-rtc-12c887-AT89C51

[gian de vera]

hmm . you used XOR for that, what is the simple circuitry of the XOR??

 

i know this is kinda off topic, but XOR circuitry is making me crazy. i cant design it well. thank you

[Anonymous]

 can u elaborate  the problem……………

 

 

can u send circuit diagram that u made by gates……..??

[Anonymous]

 

Heyy

 

i m working on ‘“Celsius & Fahrenheit  Scale digital Thermometer using 89c51.”

 

it is much more similar to ur project except of buzzer system..

 

i hv came to know that only hex code can b burn into the 89c51..

 

please tell me how can i get that hex file of the c language code of the project-

 

actully i m new here & it’s my 1st microcontroller project..

 

Please give me any other knowledge which might be helpful for me..

 

plz rply fast..

 

 

[dagakshay]

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