Design a $4-$Digit Alarm Clock

Select two pair of the SEVEN$\_$SEC$\_$TWO$-$DIGIT$\_$COM$\_$K in the Hex$\_$Display menu.

The two least significant $7-$segment LED digits will display the minutes and count from $0-59.$

The two most significant $7-$segment LED digits will display the hours and count from $0-23.$

Employ two sets of counters:

The primary set is used to display the current time.

The secondary set is used to display the selected alarm time.

A SPDT switch is used switch the LED display between the two sets of counters utilizing quad $2-$bit multiplexers.

Add a switch to select between a normal clock and a fast clock for setting the time.

Add a switch to select between no clock and a fast clock for setting the alarm.

At this point check that your Digital Alarm Clock is working properly by setting the clock speed to $60$ Hz $.$ This should run the minutes counter at $1$ second rate of change.

When the basic clock design $($above$)$ is complete, add the following enhancements to complete the project.

Modify the design to be able to switch between setting the hours times and minutes times separately. Utilize the same switches to set either the time or the alarm counters by incorporating a switch to re$-$direct the clock signal when switching between displaying the real time vs the alarm time. NOTE: ADD DESCRIPTIVE LABELS TO YOUR SWITCHES!

Use an LED as the alarm signal when the real time and alarm time are equal. Hint: Create a $12-$bit comparator using three $8-$bit comparators $($you don't need to compare the least significant digit of the minutes so that the alarm is on for $60-$seconds$).$

Finally, as a bonus, add a single $7-$segment LED digit to display the day$-$of$-$the$-$week $(0-6),$

Suggested IC Bone Pile

$7448$N BCD TO SEVEN$-$SEGMENT DISPLAY DRIVER $($Qty $5)$

$74$LS$157$N QUAD $2$ TO $1$ DATA SELECTORS$/$MULTIPLEXER $($Qty $4)$

$74$LS$192$N SYNC BCD UP$/$DOWN COUNTER WITH TWO CLOCKS $($Qty $8)$

$74$F$521$N $8-8$IT IDENTITY COMPARATOR

$74$LS$85$N $4$ BIT MAGNITUDE COMPARATOR

$741508$ QUAD $2-$INPUT AND $($and gates as needed$)$

$74$ISOAN HEX INVERTER $($inverters as needed$)$

$74$LSZON Dual $4-$INPUT NAND

$74$LS$3$ON $8-$INPUT NAND