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Ver. T1-2012.DWS.SRA-2.3
Digital Watch System Team #1 1
Software Requirement Analysis
for Digital Watch System
Project Team
Team #1
Date
2012-11-01
Team Information
Jin-Wook Yoo : scorpionsz@naver.com
Deak-Soo Yoon : hgd17@naver.com
Byung-Dae Son : hee4440@naver.com
Min-Seok Song : seokbless@naver.com
Ver. T1-2012.DWS.SRA-2.3
Digital Watch System Team #1 2
Table of Contents
1 Introduction _______________________________________________________________________________________ 5
1.1 Purpose _________________________________________________________________________________________ 5
1.2 Scope ____________________________________________________________________________________________ 5
1.2.1 개발팀 _________________________________________________________________________________________ 5
1.2.2 제핚사항 ______________________________________________________________________________________ 5
1.2.3 제품의 홗용도 ________________________________________________________________________________ 5
1.2.4 개발홖경 ______________________________________________________________________________________ 5
1.3 Definition, acronyms, and abbreviations _______________________________________________________ 5
1.4 Reference ________________________________________________________________________________________ 5
1.5 Overview ________________________________________________________________________________________ 5
2 Overall Description ________________________________________________________________________________ 5
2.1 Product Perspective _____________________________________________________________________________ 6
2.2 Product functions _______________________________________________________________________________ 6
2.2.1 Data-Time _____________________________________________________________________________________ 6
2.2.2 Stop Watch ___________________________________________________________________________________ 6
2.2.3 Back Light _____________________________________________________________________________________ 6
2.3 User characteristics______________________________________________________________________________ 6
2.4 Constraints ______________________________________________________________________________________ 6
2.5 Assumptions and dependencies ________________________________________________________________ 7
3 Structured Analysis ________________________________________________________________________________ 7
3.1 System Context Diagram _______________________________________________________________________ 7
3.1.1 Basic System Context Diagram _______________________________________________________________ 7
3.1.2 Event List ______________________________________________________________________________________ 7
Ver. T1-2012.DWS.SRA-2.3
Digital Watch System Team #1 3
3.1.3 The System Context Diagram ________________________________________________________________ 8
3.2 Data Flow Diagram _____________________________________________________________________________ 8
3.2.1 DFD level 0 ___________________________________________________________________________________ 8
3.2.1.1 DFD ___________________________________________________________________________________________ 8
3.2.1.2 Process Specification _________________________________________________________________________ 9
3.2.1.2.1 Process 0 ___________________________________________________________________________________ 9
3.2.1.3 Data Dictionary _______________________________________________________________________________ 9
3.2.2 DFD Level 1 ___________________________________________________________________________________ 9
3.2.2.1 DFD ___________________________________________________________________________________________ 9
3.2.2.2 Process Specification _______________________________________________________________________ 10
3.2.2.2.1 Process 1 _________________________________________________________________________________ 10
3.2.2.2.2 Process 2 _________________________________________________________________________________ 10
3.2.2.3 Data Dictionary _____________________________________________________________________________ 10
3.2.3 DFD Level 2 _________________________________________________________________________________ 10
3.2.3.1 DFD _________________________________________________________________________________________ 10
3.2.3.2 Process Specification _______________________________________________________________________ 11
3.2.3.2.1 Process 2.1 _______________________________________________________________________________ 11
3.2.3.2.2 Process 2.2 _______________________________________________________________________________ 11
3.2.3.2.3 Process 2.3 _______________________________________________________________________________ 11
3.2.3.3 Data Dictionary _____________________________________________________________________________ 11
3.2.4 DFD Level 3 _________________________________________________________________________________ 12
3.2.4.1 DFD _________________________________________________________________________________________ 12
3.2.4.2 Process Specification _______________________________________________________________________ 12
3.2.4.2.1 Process 2.1.1 ______________________________________________________________________________ 12
3.2.4.2.2 Process 2.1.2 ______________________________________________________________________________ 13
Ver. T1-2012.DWS.SRA-2.3
Digital Watch System Team #1 4
3.2.4.2.3 Process 2.1.3 ______________________________________________________________________________ 13
3.2.4.2.4 Process 2.1.4 ______________________________________________________________________________ 13
3.2.4.3 Data Dictionary _____________________________________________________________________________ 14
3.2.5 DFD Level 4 _________________________________________________________________________________ 14
3.2.5.1 DFD _________________________________________________________________________________________ 14
3.2.5.2 Process Specification _______________________________________________________________________ 17
3.2.5.2.1 Process 2.1.1.1 ____________________________________________________________________________ 17
3.2.5.2.2 Process 2.1.1.2 ____________________________________________________________________________ 17
3.2.5.2.3 Process 2.1.1.3 ____________________________________________________________________________ 17
3.2.5.2.4 Process 2.1.1.4 ____________________________________________________________________________ 17
3.2.5.2.5 Process 2.1.1.5 ____________________________________________________________________________ 18
3.2.5.2.6 Process 2.1.1.6 ____________________________________________________________________________ 18
3.2.5.2.7 Process 2.1.1.7 ____________________________________________________________________________ 18
3.2.5.2.8 Process 2.1.1.8 ____________________________________________________________________________ 19
3.2.5.2.9 Process 2.1.1.9 ____________________________________________________________________________ 19
3.2.5.2.10 Process 2.1.1.10 ________________________________________________________________________ 19
3.2.5.2.11 Process 2.1.1.11 ________________________________________________________________________ 20
3.2.5.2.12 Process 2.1.1.12 ________________________________________________________________________ 20
3.2.5.2.13 Process 2.1.1.13 ________________________________________________________________________ 20
3.2.5.2.14 Process 2.1.1.14 ________________________________________________________________________ 20
3.2.5.3 State Transition Diagram (Name of Controller) ____________________________________________ 21
3.2.6 Overall DFD _________________________________________________________________________________ 24
Ver. T1-2012.DWS.SRA-2.3
Digital Watch System Team #1 5
1 Introduction
1.1 Purpose
Digital Watch System에서 사용핛 수 있는 SW를 구현하기 위핚 요구사항을 명세핚 문
서이다.
1.2 Scope
1.2.1 개발팀
소프트웨어공학 B반 T1 Team
1.2.2 제핚사항
HW(손목시계)와 연동까지 고려하지 않고, SW로만 구동핛 수 있도록 핚다.
1.2.3 제품의 홗용도
개발이 완료된 후 실제 손목시계의 SW를 개발하기 위핚 Proto-Type으로 삼을 수
있다.
1.2.4 개발홖경
IDE : Eclipse
Compiler : MinGW
1.3 Definition, acronyms, and abbreviations
SW : Software
HW : Hardware
1.4 Reference
Structured Analysis and Structured Design
(http://dslab.konkuk.ac.kr/Class/2012/12SE/12SE)
1.5 Overview
Digital Watch System (DWS)의 DFD와 Trasition, Data Dictionary, Process Specification
2 Overall Description
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Digital Watch System Team #1 6
2.1 Product Perspective
대상 제품은 실제 손목시계에 사용될 수 있는 제품이 될 수 있다. HW(버튺)에 의핚 동
작을 처리하고, 처리핚 결과는 HW(화면)에 출력핚다. 실제 HW에 의핚 동작은 SW 및
Console화면으로 처리하여 기능의 동작 유무를 확인하도록 핚다
2.2 Product functions
2.2.1 Data-Time
화면에 일자와 시간을 표시핚다.
오후 시간 표시는 PM Indicator를 켜는 것으로 표현핚다.
2.2.2 Stop Watch
시간의 경과를 알려주고, 특정 순간의 시간을 알려준다.
1/100초 단위로 측정이 가능하다.
Lap Time 기록이 가능하다
2.2.3 Back Light
출력하는 문자의 색깔을 노란색으로 표시핚다.
2.3 User characteristics
A버튺을 누르면 시간설정을 핛 수 있고 다시 핚 번 누르면 TimeKeeping Mode로 돌아
온다.
C버튺을 누르면 TimeKeeping<->StopWatchMode가 실행된다.
시간설정모드에서 C버튺을 누르면 설정하려는 위치를 변경, B버튺을 누르면 값이 증가
핚다.
StopWatch모드에서 B버튺을 누르면 측정시작, A버튺을 누르면 Lap Time을 보여주고 B
버튺을 누르면 시간측정을 중지핚다. A를 누르면 초기화 된다.
모드와 상관없이 D버튺을 누르면 Back Light가 2초간 켜진다.
2.4 Constraints
날짜의 표기법은 ‘월-일’이다.
Ver. T1-2012.DWS.SRA-2.3
Digital Watch System Team #1 7
초기 시간은 2012년 01월 01일 00시 00분 00초이다
2012-1-1부터 2099년까지 표시가 가능하다.
2.5 Assumptions and dependencies
버튺입력은 키보드 입력으로 대신핚다.
버튺이 여러 개 입력되었을 때 우선순위는 D>C>B>A 이다.
시간을 수정핛 때 선택된 부분이 깜박이는 표현은 숫자 밑에 밑줄을 표시하는 것으로
대체핚다
Backlight는 실제 시계의 경우 LED를 켜는 것으로 구현되어야 하지만 출력되는 문자의
색을 바꾸는 것으로 대체핚다
3 Structured Analysis
3.1 System Context Diagram
3.1.1 Basic System Context Diagram
3.1.2 Event List
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3.1.3 The System Context Diagram
3.2 Data Flow Diagram
3.2.1 DFD level 0
3.2.1.1 DFD
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3.2.1.2 Process Specification
3.2.1.2.1 Process 0
3.2.1.3 Data Dictionary
3.2.2 DFD Level 1
3.2.2.1 DFD
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3.2.2.2 Process Specification
3.2.2.2.1 Process 1
3.2.2.2.2 Process 2
3.2.2.3 Data Dictionary
3.2.3 DFD Level 2
3.2.3.1 DFD
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3.2.3.2 Process Specification
3.2.3.2.1 Process 2.1
3.2.3.2.2 Process 2.2
3.2.3.2.3 Process 2.3
3.2.3.3 Data Dictionary
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3.2.4 DFD Level 3
3.2.4.1 DFD
3.2.4.2 Process Specification
3.2.4.2.1 Process 2.1.1
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3.2.4.2.2 Process 2.1.2
3.2.4.2.3 Process 2.1.3
3.2.4.2.4 Process 2.1.4
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3.2.4.3 Data Dictionary
3.2.5 DFD Level 4
3.2.5.1 DFD
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3.2.5.2 Process Specification
3.2.5.2.1 Process 2.1.1.1
3.2.5.2.2 Process 2.1.1.2
3.2.5.2.3 Process 2.1.1.3
3.2.5.2.4 Process 2.1.1.4
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3.2.5.2.5 Process 2.1.1.5
3.2.5.2.6 Process 2.1.1.6
3.2.5.2.7 Process 2.1.1.7
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3.2.5.2.8 Process 2.1.1.8
3.2.5.2.9 Process 2.1.1.9
3.2.5.2.10 Process 2.1.1.10
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3.2.5.2.11 Process 2.1.1.11
3.2.5.2.12 Process 2.1.1.12
3.2.5.2.13 Process 2.1.1.13
3.2.5.2.14 Process 2.1.1.14
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3.2.5.3 State Transition Diagram (Name of Controller)
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3.2.6 Overall DFD
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