miniproject using microcontroller atmel 89c51

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cerine

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miniproject of microcontroller

iam doing my miniproject using microcontroller atmel 89c51.its an examination clock that gives instructions to students like start the exam,one hour left,tie your papers,etc.i need to interface an rtc ,dac and speaker. i am a beginner,can anyone please help me.would it be better for me to use pic?

Added after 10 minutes:

iam using rtc ds1307 and dac 0808.
 

mini project for microcontroller

Hai Cerine,
Try this kit from www.united77.com/projects.htm

Microcontroller based school bell system using Dallas 1307 RTC.This innovative bell system designed using Dallas DS1370 real time chip which is further used in conjunction with Atmel 89C52 for setting various bell timings of a day. Long bell and short bell rings can be individually selected using user friendly menu’s displayed on a 16 × 2 LCD. The bell may be an AC 220 volt operated device which is switched through a BT12/600 Triac and MOC3021 Optocoupler. The 16 button key pad acts as an input device for all the setting of the project and the CMOS battery in the circuit provides a backup of clock settings in case of power loss.

Good luck
 

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