marabdul
Junior Member level 2
bell timer
NEED CODES AND CIRCUIT DIAGRAMFOR THE TIMING.THE TIMING IS AS FOLLOWS:
MON-THUR;EACH PERIOD HAS 40MIN WITH TWO BREAK PERIODS,ONE LASTS FOR 30MIN AND ONE LASTS FOR 10MIN.THE NUMBER OF PERIODS IS EIGHT.CLASS STARTS 7.40AM AND CLOSES 1.40PM
FRI;EACH PERIOD HAS 30MIN WITH TWO BREAK PERIODS,ONE LASTS FOR 25MIN AND ONE LAST FOR 5MIN,THE NUMBER OF PERIODS IS EIGHT.CLASS STARTS 7.30AM AND CLOSES 12.00PM
I'LL USE 555TIMER,DARLINGTON PAIRS,SEVEN SEGMENT DISPLAY FOR DISPLAYING THE PERIODS
NEED CODES AND CIRCUIT DIAGRAMFOR THE TIMING.THE TIMING IS AS FOLLOWS:
MON-THUR;EACH PERIOD HAS 40MIN WITH TWO BREAK PERIODS,ONE LASTS FOR 30MIN AND ONE LASTS FOR 10MIN.THE NUMBER OF PERIODS IS EIGHT.CLASS STARTS 7.40AM AND CLOSES 1.40PM
FRI;EACH PERIOD HAS 30MIN WITH TWO BREAK PERIODS,ONE LASTS FOR 25MIN AND ONE LAST FOR 5MIN,THE NUMBER OF PERIODS IS EIGHT.CLASS STARTS 7.30AM AND CLOSES 12.00PM
I'LL USE 555TIMER,DARLINGTON PAIRS,SEVEN SEGMENT DISPLAY FOR DISPLAYING THE PERIODS