ABBOTTABAD UNIVERSITY OF SCIENCE &TECHNOLOGY

Report on Building a Model of an Alarm Clock

Submitted to;

Sir Jawad Lecturer Software Construction

Submitted by;

AHSAN RAHIM: 1838

KAMRAN AHMED: 1848

Session 2013-2017

DEPARTMENT OF INFORMATION TECHNOLOGY

Dictionary of terms:-

Clock:

An instrument or device used to measure and keep track of time.

Alarm clock:

Device which give audio able or visual signal on the predefine time.

User:

User is a person who is operating the alarm clock.

Alarm Clock:

The alarm clock is the entire system & specific device that will perform all the defined

tasks.

Alarm Time:

Noise made at a specified time.

Radio:

A communication device that receives a electromagnetic frequencies & then amplifies

into audible sound. Typical frequencies can be in the FM or AM range.

Snooze:

A button on alarm clock that is press when alarm is sounding & will stop temporarily for

a certain time.

Time:

The Time set by the user.

Hour:

There are 24 Hours in a day.

Minute:

There are 60 Minutes in an Hour.

INTRODUCTION:-

The document describes the background information of alarm clock. The design, architecture and dynamic behavior of alarm clock are also discussed in this document.

GENERAL KNOWLEDGE ABOUT DOMAIN &

OWN ASSUMPATIONS:-

Some requirements for dynamic behavior of alarm clock are given below;

There should be four buttons on alarm clock.

BUTTON 1 serves to adjust the time but when alarm plays this button

serve as “SNOOZE BUTTON” also.

BUTTON 2 sets the alarm time but when alarm plays this button also

serves to “OFF” the alarm clock.

These two buttons serve as adjusting time, alarm, and volume for alarm time. These button are use to ’Adjust Time’ and ‘Set Alarm’ when we press these after clicking ‘Button 1’ and ‘Button 2’ respectively.

Clock normally shows current time but after ‘Setting Alarm Time’, Alarm time also

display on screen in a corner along with current time. Clock plays single beep sound on every hours start (e.g at 12:00 min). At alarm time clock play bell ring sound. ‘Snooze Button’ snooze the alarm for 5 min. If no button is pressed alarm remain active for 2 min and after that automatically stops.

Conceptual Model:

Adj / Snz

Set / OFF

Alarm Clock

Manipulates

User

ENIVIRONMENT:-

Alarm clock displays time as well as alarm time in digital format. And it operates on 1.5 voltages DC power supply i.e dry cell. Task and procedures currently performed: Currently analogue alarm clock is being used in given environment. Analogue clock did not give precise time e.g sometime we found minutes needle between

4 and 5 and we confused either it is 4 or 5. Analogue clock did not show its AM or PM. No volume adjustment is available. No snooze option is present.

COMPETING SOFTWARES:-

There are several tools and software in markets which are being used for somehow this type of duty but they are either too complex which is difficult to use or too simple which is unable to perform the duty properly.

SIMILARITIES TO OTHER DOMAINS:-

There are many other domains which are similar to this domain like

Salat Time Alert, Event Reminder, Time Table system Scheduler etc.

Use Cases:

Use case 1: Turn on System

Use Case Name:

Turn On System

Description:

This is what happens when a user activates the System for the first time. The Alarm Clock is first built,

this means that the alarm is "Off" initially and that the volume is set to the "Low" intensity level.

Actor: User

Goal: The user wants to turn on the System

Steps:

1. User turns on the Alarm Clock.2. Alarm Clock sets the clock time to 00:00.3. Alarm Clock sets the alarm time to 00:00.4. System verifies the buzzer volume selection.5. System verifies the alarm type selection.

Use case 2: Turn off System

Use Case Name: Turn Off System.

Actor: User.

Goal: User de-activates the system.

Precondition: System is on.

Steps:

1.User turns the System off.

Post condition: System is off.

Use case 3: Set Alarm volume to low

Use Case Name: Set Buzzer Volume to Low

Actor: User.

Goal: Set the buzzer volume to the "Low" setting.

Precondition: System is on AND Buzzer Volume is not 1

Steps:

1.User moves the buzzer volume selector switch to the "Low" setting

Post condition: Buzzer Volume is 1

Use case 4: Set Alarm volume to Medium

Use Case Name: Set Buzzer Volume to Medium

Actor: User.

Goal: Set the buzzer volume to the "Medium" setting.

Precondition: System is on AND Buzzer Volume is not 2

Steps:

1.User moves the buzzer volume selector switch to the "Medium" setting

Post condition: Buzzer Volume is 2

Use case 5: Set Alarm volume to High

Use Case Name: Set Buzzer Volume to High

Actor: User.

Goal: User moves the buzzer volume selector switch to the "High" setting

Precondition: System is on AND Buzzer Volume is not 3

Steps:

1.User moves the buzzer volume selector switch to the "High" setting.

Post condition: Buzzer Volume is 3

Use case 6: Set Alarm Type to Off

Use Case Name: Set Alarm Type to Off

Actor: User.

Goal: The user wants to turn the alarm feature off.

Precondition: System is on AND Alarm Type is not Off

Steps:

The user moves the "Alarm Type" selector switch to the "Off" position.

If the alarm is sounding, then the alarm is turned off.

Post condition: Alarm Type is Off AND Alarm is Not Sounding

Use case 7: Set Alarm Type to Radio

Use Case Name: Set Alarm Type to Radio

Actor: User.

Goal:

The user wants to switch the "Alarm Type" selector switch to the "Radio" setting.

Precondition: System is on AND Alarm Type is not Radio

Steps:

1.The user moves the "Alarm Type" selector switch to the "Radio" position

2.If the alarm is sounding, then the alarm is switched to the Radio immediately.

Post condition: Alarm Type is Radio

Type button will cause the type to alternate between Radio and Ringer.

Use case 8: Snooze:

Use case Name: Snooze alarm.

Actor: User.

Goal:

To stop the ringing alarm for a 5 minutes & then it will ring again.

Precondition: Alarm is ringing.

Post condition: Alarm will be snoozed or temporarily off for 5 minutes.

Steps:

The User shall press the snooze button to silence the alarm for 5 minutes. After 5 minutes the

alarm will begin to sound again.

Activity Diagram:

Turn system ON

Set time

Set Alarm

Display Time

Display Time

Display AlarmTime

Alarm Ring/Radio ON

OFF

Snooze

Display Time