Build and test a digital alarm clock

Reference no: EM132266192

Project

Your project is to design, develop, build and test a digital alarm clock. You are to use the LCD display to show the current time.

For a passing (P) grade your alarm clock MUST:

• Display the time in 12 hour mode 01:00:00 to 12:59:59, AND, display the time in 24 hour mode, from 00:00:00 to 23:59:59. The change is to se user selectable.
• Have a method for setting the time. Any hour or minute must be selectable. The seconds may be either selectable, or it may be resettable.

For a credit (Cr) grade your alarm clock MUST:

• Include all the attributes of the pass grade
• Have an alarm time, in HH:MM that when enabled and matched with the current time will initiate the alarm.
• The alarm when triggered will sound for 60 seconds and then fall silent until the next match.
• The alarm can be silenced for the current cycle through the use of a "silence" button
• The alarm can be disabled through the use of a mode switch.
• Some indication of whether the alarm is enabled must be provided.
• Provide a remote alarm (visual only) and silence option. This allows our alarm to wake Two rooms! The remote link must be provided using the SPI link and the supplied port expander

For a distinction (D) grade your alarm clock MUST:

• Include all the attributes of the pass and credit grades
• Provide automatic changing of the time for Daylight Savings.
• Utilise the following daylight savings rules only:
? At 02:00 of 1st of October the hour will increment 01:50:50 → 03:00:00
? At 03:00 on the 1st of April the hour will decrement 02:59:59 → 02:00:00
• Leap years are optionsal, although yeap year handling will be accorded extra marks.

For a high distinction (HD) grade your alarm clock MUST:

• Include all the attributes of the pass, credit and distinction grades
• Include additional functionality that in the minds of the academic staff is impressive
• Include a written user manual
• have a user interface that is clean, concise and easy to use.

Question Sheet

This defence will cover the initial design of their project. It will include interface selection, peripheral comparison and state machine choices

1) Does the design display the time?
a. Display? HH:MM:SS? (or other display)?
b. How is it displayed?
c. Are the state transitions described?

2) Does it have 12/24 hour mode?
a. How is it selected?
b. How does it affect the time state machine?

3) How do we set the time?
a. How does it affect the time state machine?

4) Is there an alarm function?
a. How is it set?
b. How is it triggered?
c. Can we disable it?
d. Can we silence the alarm once triggered?
i. Does the alarm auto re-enable?
e. What happens when the alarm is being changed and it equals the current time?
f. How does it interact with the time state machine?

5) Is there a remote alarm display and silence?
a. Does it use the SPI link?
b. How does it work in terms of the alarm state machine?

6) Is there Daylight Savings interaction?
a. How is it stored?
b. What are its state transitions?
c. How does it interface with the time state machine?
d. Does it interact with the alarm state machine?
e. What if the alarm is set for a time in between the daylight savings change over times?
f. Are leap years handled?

7) Is there a user manual?
a. Is the manual clean and concise?
b. Does the manual describe any additional functionality

8) Is there impressive extra functionality?
a. If yes, describe it...

Reference no: EM132266192

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