소프트웨어공학개론 Digital Watch System

SA+SD

TEAM 4 version_3

팀원

김재엽 201111344

김 신 201111342

박주광 201211350

황정아 201111397

Contents

1.System Context Diagram

2.Event List

3.DFD Level 0

4.DFD Level 1

5.DFD Level 2

6.DFD Level 3

7.DFD Level 4

8.DFD Level 5

9.DFD Level 6

10.DFD

11.SD

System Context Diagram

Input Screen

Digital

Watch

Control

A Button Input

B Button Input

C Button Input

D Button Input Display

A Button

B Button

C Button

D Button

Digital

Watch

Control

0

DFD Level 0

A Button Input

Digital

Clock

Tick

Screen

Display

B Button Input

C Button Input

D Button Input

Process Specification

Reference No. 0

Name Digital watch Control

Input Button (Char)

Tick

Output Display (Structure)

Description 버튼을 입력 받아서 모드에 맞게 Display

를 Screen에 출력한다.

Data Dictionary

Input/Output Event Description Format/Type

A button A button True/False, Interrupt

B button B button True/False, Interrupt

C button C button True/False, Interrupt

D button D button True/False, Interrupt

Display DateTime, LapTime, Button,

Mode Information

Structure(Button, Mode, D

ateTime, Laptime)

Tick Digital clock에서 주기적으

로 주는 Tick.

Periodic

DFD Level 1

Button

Acceptor

1

A Button Input

B Button Input

C Button Input

D Button Input

Mode

Manager

2

Display

Manager

3

Display

Mode Display

Tick

Button

Digital Watch Control

Tick

Process Specification

Reference No. 1

Name Button Acceptor

Input Button (Char)

Output Button (Char)

Description 버튼을 입력 받아 버튼을 출력한다.

Process Specification

Reference No. 2

Name Mode manager

Input Button (Char)

Tick

Output Display Mode (Structure)

Description 버튼에 따라 Display Mode를 출력한다.

Process Specification

Reference No. 3

Name Display manager

Input Display Mode (Structure)

Tick

Output Display (Structure)

Description 디스플레이 모드를 입력 받으면 그에 맞는

디스플레이를 출력한다.

Data Dictionary - Modified

Input/Out

put Event

Description Format/Type

Button Button Char

Mode Mode 정보가 들어있는 구조체 .

Backlight 관련 변수는 따로 만들

어서 조정.

Backlight_time은 백라이트가 켜지

고 나서의 시간을 측정하는 변수.

2초가 지나면 is_backlight를 false

로 바꿈

Structure

{mode Top_mode

mode Middle_mode

mode Bottom_mode

bool is_backlight

int backlight_time

}

Display Mode 모든 정보와 출력 모드. 출력 모드

는 Top, Middle, Bottom 모드의 모

든 정보를 의미.

Structure

(Button, Datetime, Laptime,

Mode)

Data Dictionary - Modified

Input/Output Event Description Format/Type

Top_mode 최상위 모드.

TK, SW 모드에 해당함.

enum TOP_MODE{

TIMEKEEPING, STOPWATCH}

Middle_mode 최상의 모드의 중간모드. - TK 모드 : COMMON, TIME_SETTING

- SW 모드 : RUNNING, LAPTIME, START,

STOP, PAUSE, RESUME

enum MIDDLE_MODE{ COMMON, TIME_SETTING, RUNNING,

LAPTIME, START, STOP, PAUSE, RESUME}

Bottom_mode 최상위 모드의 하위모드이거나 중

간모드의 하위모드에 해당. - BACKLIGHT : 최상위 모드의 하위모드

- SECONT, HOUR, MINUTE, DAY, YEAR,

MONTH : TK->TIME_SETTING의 하위모드

- STOPWATCH_XXX : SW 모드의 하위 모드의

트리거

- NIL : 아무 모드 아님.

enum BOTTOM_MODE{ SECOND, HOUR, MINUTE, DAY, YEAR,

MONTH, STOPWATCH_LAPTIME,

STOPWATCH_RESET,

STOPWATCH_PAUSE, STOPWATCH_RUN,

STOPWATCH_STOP,

STOPWATCH_RESUME, BACKLIGHT, NIL

}

DFD Level 2

Button

Control

1.5

A Button Input

B Button Input

C Button Input

D Button Input

A Button

B Button

C Button

D Button

Button

Button Acceptor

A Button

Interface

1.1

B Button

Interface

1.2

C Button

Interface

1.3

D Button

Interface

1.4

DFD Level 2

Mode

Selector

2.1

Time

Control

2.3

Mode

Control

2.2

Display

Mode

Mode Manager

Tick

Datetime

Laptime

Tick

DFD Level 2 Display Manager

Display

Mode Display

Mode

Controller

3.1

Display

TimeKeeping

Mode

3.2

Display

Stopwatch

Mode

3.3

Display

Display

Enable

Disable

Enable

Disable Tick

Tick

Process Specification

Reference No. 1.1

Name A Button Interface

Input A Button (Char)

Output A Button (Char)

Description A 버튼을 입력 받으면 A 버튼을 출력한다.

Process Specification

Reference No. 1.2

Name B Button Interface

Input B Button (Char)

Output B Button (Char)

Description B 버튼을 입력 받으면 B 버튼을 출력한다.

Process Specification

Reference No. 1.3

Name C Button Interface

Input C Button (Char)

Output C Button (Char)

Description C 버튼을 입력 받으면 C 버튼을 출력한다.

Process Specification

Reference No. 1.4

Name D Button Interface

Input D Button (Char)

Output D Button (Char)

Description D 버튼을 입력 받으면 D 버튼을 출력한다.

Process Specification

Reference No. 1.5

Name Button Control

Input Button (Char)

Output Button (Char)

Description Button을 입력 받아 Button을 출력한다.

Process Specification

Reference No. 2.1

Name Mode Selector

Input Button (Char)

Tick

Output Button & Mode (Structure)

Description Button을 입력 받으면 그에 따른 모드를

선택하고 현재 Button과 바뀐 Mode를 출

력한다

Process Specification

Reference No. 2.2

Name Mode Control

Input Button_Mode (Structure)

Output DateTime (Structure)

LapTime(Structure)

Description 버튼, 모드를 받아 최상위 모드에서 모드

를 결정하고 DateTime, LapTime을 출력한

다.

Process Specification

Reference No. 2.3

Name Time Control

Input DateTime (Structure)

LapTime(Structure)

Output Display Mode (Structure)

Description DateTime, LapTime을 입력 받으면 최상위

모드에서 필요한 시간 정보를 뽑아 디스플

레이 모드를 출력을 한다.

Process Specification

Reference No. 3.1

Name Display Mode Controller

Input Display Mode (Structure)

Tick

Output Enable/Disable (True/False)

Description Display Mode를 입력 받으면 최상위 모드

에 맞는 Display가 출력될 수 있도록 enab

le/disable을 출력한다.

Process Specification

Reference No. 3.2

Name Display TimeKeeping Mode

Input Enable/Disable (True/False)

Output Display (Structure)

Description Enable을 입력 받은 경우 TK mode에 맞

게 디스플레이를 출력한다.

Disable을 입력 받은 경우 출력하지 않는

다.

Process Specification

Reference No. 3.3

Name Display Stopwatch Mode

Input Enable/Disable (True/False)

Tick

Output Display (Structure)

Description Enable을 입력 받은 경우 SW mode에 맞

게 디스플레이를 출력한다.

Disable을 입력 받은 경우 출력하지 않는

다.

Data Dictionary

Input/Out

put Event

Description Format/Type

DateTime 현재 시간과 모드, 버튼 정보 Structure

(Mode_Button mode_button

int year

int month

int day

int week

int hour

int minute

int second)

LapTime 측정할 때 이용되는 시간과 모

드, 버튼 정보

Structure (Mode_Button mode_button

double lap_data struct timeval start struct timeval end struct timeval lap

double now_time)

DFD Level 3 State Transition Diagram for Controller 3.1 (Display Mode Controller)

Display Timekeeping Mode

Display Stopwatch Mode

/ Enable “Display Timekeeping Mode”

Tick[Timekeeping Mode]

/ Disable “Display Timekeeping Mode”

Enable “Display Stopwatch Mode”

Tick[Stopwatch Mode]

/ Disable “Display Stopwatch Mode”

Enable “Display Timekeeping Mode”

Tick[Backlight&& backlight_time > 2]

/ Disable “Backlight”

backlight_time = 0

Tick[Backlight && backlight_time > 2]

/ Disable “Backlight Mode”

backlight_time = 0

Tick[Backlight && backlight_time <= 2]

/ Enable “Backlight”

backlight_time + 1

Tick[Backlight&& backlight_time <= 2]

/ Enable “Backlight Mode”

backlight_time + 1

DFD Level 3

Button

Controller

1.5.1

A Button

B Button

C Button

D Button

Trigger

Trigger

Trigger

Trigger

Button Control

Button

Button

Button

Button

A Button

1.5.2

D Button

1.5.5

B Button

1.5.3

C Button

1.5.4

DFD Level 3

Mode

Controller

2.1.1

Enable

Enable

Disable

Disable

Mode Selector

Button

Mode &

Button

Mode &

Button

Time

Keeping

Mode

2.1.2

Stopwatch

Mode

2.1.3 Tick

DFD Level 3 Mode Control

Mode &

Button

Timekeeping

Control

2.2.1

Stopwatch

Control

2.2.2

DateTime

Laptime

DFD Level 3 Time Control

DateTime Display

Mode

Display

Mode

Current

time

2.3.1

Stopwatch

2.3.2

Tick

LapTime

Tick

DateTime

DFD Level 3 Display Timekeeping Mode

Display

Mode Timekeeping

Display

3.2.1

Display

Tick

DFD Level 3 Display Stopwatch Mode

Display

Mode Stopwatch

Display

3.3.1

Display

Tick

Process Specification

Reference No. 1.5.1

Name Button Controller

Input Button (Char)

Output Trigger (True/False)

Description Button을 입력 받아 해당 Button에 Trigge

r를 출력한다.

Process Specification

Reference No. 1.5.2

Name A Button

Input Trigger (True/False)

Output Button (Char)

Description Trigger를 입력 받으면 A 버튼을 출력한다.

Process Specification

Reference No. 1.5.3

Name B Button

Input Trigger (True/False)

Output Button (Char)

Description Trigger를 입력 받으면 B 버튼을 출력한다.

Process Specification

Reference No. 1.5.4

Name C Button

Input Trigger (True/False)

Output Button (Char)

Description Trigger를 입력 받으면 C 버튼을 출력한다.

Process Specification

Reference No. 1.5.5

Name D Button

Input Trigger (True/False)

Output Button (Char)

Description Trigger를 입력 받으면 D 버튼을 출력한다

.

Process Specification

Reference No. 2.1.1

Name Mode Controller

Input Button (Char)

Tick

Output Enable/Disable

Description Button을 입력 받으면 해당 모드에 Enable

/Disable로 출력해 모드를 전환한다.

Process Specification - Modified

Reference No. 2.1.2

Name Time Keeping Mode

Input Enable/Disable (True/False)

Output Mode_Button (Structure)

Description Input이 Enable인 경우 Top_mode는 TIME

KEEPING, Middle_mode 는 COMMON, B

ottom_mode 는 NIL 로 바뀐 Mode와 But

ton이 출력된다.

Disable인 경우 출력하지 않는다.

Process Specification - Modified

Reference No. 2.1.3

Name Stopwatch Mode

Input Enable/Disable (True/False)

Output Mode_Button (Structure)

Description Input이 Enable인 경우 Top_mode는 STO

PWATCH, Middle_mode는 STOP, Bottom_

mode는 STOPWATCH_STOP로 바뀐 Mod

e 와 button 출력된다.

Disable인 경우 출력하지 않는다.

Process Specification

Reference No. 2.2.1

Name Time Keeping Control

Input Mode_Button (Structure)

Output DateTime (Structure)

Description Mode와 Button을 입력 받으면 TK mode,

SW mode control에서 필요한 Datetime

을 출력한다.

Process Specification

Reference No. 2.2.2

Name Stopwatch Control

Input Mode_Button (Structure)

Output Lap time(Structure)

Description Mode_Button을 입력 받으면 SW mode c

ontrol에서 필요한 Lap time을 출력한다.

Process Specification

Reference No. 2.3.1

Name Current Time

Input DateTime (Structure)

Tick

Output Display Mode(Structure)

Description DateTime을 입력 받으면 DateTime 안에

있는 모드에 맞게 디스플레이 모드를 출력

한다.

Process Specification

Reference No. 2.3.2

Name Stopwatch

Input DateTime (Structure)

Laptime (Structure)

Tick

Output Display Mode (Structure)

Description DateTime, Laptime을 입력 받으면 SW 모

드에서 필요한 Display Mode를 출력한다.

Process Specification

Reference No. 3.2.1

Name TimeKeeping Display

Input Display Mode (Structure)

Tick

Output Display (Structure)

Description Display Mode를 입력 받아 TK 모드에서의

Display를 출력한다.

Process Specification

Reference No. 3.3.1

Name Stopwatch Display

Input Display Mode (Structure)

Tick

Output Display

Description Display Mode를 입력 받으면 SW MODE

에서의 display를 출력한다.

DFD Level 4 State Transition Diagram for Controller 1.5.1 (Button Controller)

A Button

B Button

D Button

C Button

if[D]

/ Trigger “D Button” if[C && !D]

/ Trigger “C Button”

if[B && !C && !D]

/ Trigger “B Button”

if[A && !B && !C && !D]

/ Trigger “A Button”

initialization

DFD Level 4 State Transition Diagram for Controller 2.1.1 (Mode Controller)

Timekeeping

Mode

Stopwatch

Mode

/ Enable “Timekeeping Mode”

Tick[C]

/ Disable “Timekeeping Mode”

Enable “Stopwatch Mode”

Tick[C]

/ Disable “Stopwatch Mode”

Enable “Timekeeping Mode”

DFD Level 4 Timekeeping Control

Mode &

Button

Timekeeping

Controller

2.2.1.1

Common

Mode

2.2.1.2

Time

Setting

Mode

2.2.1.3

Enable

Disable

Enable

Disable

DateTime

DateTime

Tick

Stopwatch Control

Mode &

Button

Stopwatch

Mode

Controller

2.2.2.1

Enable

Start 2.2.2.2

Laptime

Tick

Laptime

Laptime

Pause

2.2.2.3

Resum

e

2.2.2.4

Reset

2.2.2.5

Laptim

e

2.2.2.6

Runnin

g

2.2.2.8

Stop

2.2.2.9

Enable

Disable

Disable

Trigger

Trigger

Trigger

Trigger

Trigger Laptime

Laptime

Laptime

Laptime Rerunn

ing

2.2.2.7

Laptime

Trigger

DFD Level 4

Process Specification - Modified

Reference No. 2.2.1.1

Name TimeKeeping Controller

Input Mode_Button (Structure)

Tick

Output Enable/Disable (True/False)

Description Mode_Button을 입력 받으면 TK mode에

서 Button에 따라 각각의 모드에 Enable/

Disable을 출력한다.

만약 Common mode 에서 C 버튼을 입

력하면 Common mode를 disable하고 Ti

me setting mode를 enable 한다. 반대도

똑같이 작용한다.

Process Specification

Reference No. 2.2.1.2

Name Common Mode

Input Enable/Disable (True/False)

Output DateTime (Structure)

Description Enable을 입력 받을 경우 Common Mode

에서 DateTime를 출력한다.

Disable인 경우 DateTime는 출력되지 않

는다.

Process Specification

Reference No. 2.2.1.3

Name TimeSetting Mode

Input Enable/Disable (True/False)

Output DateTime (Structure)

Description Enable을 입력 받을 경우 TimeSetting Mo

de에서 DateTime를 출력한다.

Disable인 경우 DateTime는 출력되지 않

는다.

Process Specification

Reference No. 2.2.2.1

Name Stopwatch Mode Controller

Input Mode_Button (Structure)

Tick

Output Trigger (True/False)

Enable/Disable (True/False)

Description Mode_Button을 입력 받아 middle mode

에 따라 trigger 혹은 Enable/Disable을 출

력한다.

Process Specification

Reference No. 2.2.2.2

Name Start

Input Trigger (True/False)

Output Lap time (Structure)

Description Trigger 를 입 력 받 으 면 초 기 화 된

stopwatch을 run start하면서 돌아가기 시

작하는 lap time을 출력한다.

Process Specification

Reference No. 2.2.2.3

Name Pause

Input Trigger (True/False)

Output Lap time (Structure)

Description Trigger을 입력 받으면 정지된 lap time을

출력한다.

Process Specification

Reference No. 2.2.2.4

Name Resume

Input Trigger (True/False)

Output Lap time (Structure)

Description Trigger를 입력 받으면 초기화 하지 않은

lap time을 재 측정하면서 돌아가는 lap

time을 출력한다.

Process Specification

Reference No. 2.2.2.5

Name Reset

Input Trigger (True/False)

Output Lap time (Structure)

Description Trigger를 입력 받으면 초기화된 lap time

을 출력한다.

Process Specification

Reference No. 2.2.2.6

Name Lap Time

Input Trigger (True/False)

Output Lap time (Structure)

Description Trigger를 입력 받으면 돌아가다 A버튼을

눌렀을 때 측정한 lap time을 출력한다.

Process Specification

Reference No. 2.2.2.7

Name Rerunning

Input Trigger (True/False)

Output Lap time (Structure)

Description Trigger를 입력 받으면 현재 돌아가는 lap

time을 출력한다.

Process Specification

Reference No. 2.2.2.8

Name Running

Input Enable/Disable (True/False)

Output Lap time (Structure)

Description Enable를 입력 받으면 현재 돌아가는 Lap

time을 출력한다.

Process Specification

Reference No. 2.2.2.9

Name Stop

Input Enable/Disable (True/False)

Output Lap time (Structure)

Description Enable를 입력 받으면 측정을 중지시키고

그 때의 Lap time을 출력한다.

DFD Level 5 State Transition Diagram for Controller 2.2.1.1 (Timekeeping Controller)

Common Mode

Time Setting Mode

/ Enable “Common Mode”

Tick[A]

/ Disable “Common Mode”

Enable “Time Setting Mode”

Tick[A]

/ Disable “Time Setting Mode”

Enable “Common Mode”

DFD Level 5 State Transition Diagram for Controller 2.2.2.1 (Stopwatch Controller)

Stop

Start

Running

Reset

Laptime

Rerunning

Resume

Pause

/ Enable “Stop”

/ Disable “Running”

Enable “Running”

Tick[B && middle_mode == STOP]

/Trigger “Start”

Tick[B && middle_mode == RUNNING && bottom_mode == STOPWATCH_RUN]

/Trigger “Pause”

/Enable ”Running”

Tick[B && middle_mode == RUNNING && bottom_mode == STOPWATCH_PAUSE ] /Trigger “Resume”

/Enable ”Running”

Tick[A && middle_mode == RUNNING && (bottom_mode == STOPWATCH_RUN ||bottom_mode == STOPWATCH_LAPTIME)]

/Trigger “Laptime”

/Enable “Running”

Tick[B && middle_mode == RUNNING && bottom_mode == STOPWATCH_LAPTIME]

/Trigger “Rerunning”

/Enable “Running”

Tick[A && middle_mode == RUNNING && bottom_mode == STOPWATCH_PAUSE]

/Trigger “Reset”

/Disable “Stop”

Enable “Stop”

DFD Level 5 - Modified

Time Setting Mode

Mode &

Button

Time

Setting

Mode

Controller

2.2.1.3.1

Second

_Plus

2.2.1.3.

2

Minute_

Plus

2.2.1.3.

4

Hour_pl

us

2.2.1.3.

3

Year_Pl

us

2.2.1.3.

5

Month_

Plus

2.2.1.3.

6

Day_Pl

us

2.2.1.3.

7

DateTime

DateTime

DateTime

DateTime

DateTime

DateTime

Enable

Disable

Enable

Disable

Enable

Disable

Enable

Disable

Enable

Disable

Enable

Disable

Tick

Process Specification

Reference No. 2.2.1.3.1

Name Time Setting Mode Controller

Input Mode_Button (Structure)

Tick

Output Enable/Disable (True/False)

Description Mode, Button을 입력 받아 TK 모드에서

Time Setting Mode인 경우 버튼, Mode에

맞게 Enable/Disable을 출력한다.

Controller에 입력이 들어온 경우 처음에

는 Second Data Process에 Enable을 보낸

다.

Process Specification - Modified

Reference No. 2.2.1.3.2

Name Second_Plus

Input Enable/Disable (True/False)

Output DateTime (Structure)

Description Enable을 입력 받은 경우 Second에 대한

Event를 출력한다.

Process Specification - Modified

Reference No. 2.2.1.3.3

Name Hour_Plus

Input Enable/Disable (True/False)

Output DateTime (Structure)

Description Enable을 입력 받은 경우 Hour에 대한 Ev

ent를 출력한다.

Process Specification - Modified

Reference No. 2.2.1.3.4

Name Minute_Plus

Input Enable/Disable (True/False)

Output DateTime (Structure)

Description Enable을 입력 받은 경우 Minute에 대한

Event를 출력한다.

Process Specification - Modified

Reference No. 2.2.1.3.5

Name Year_Plus

Input Enable/Disable (True/False)

Output DateTime (Structure)

Description Enable을 입력 받은 경우 Year에 대한 Eve

nt를 출력한다.

Process Specification - Modified

Reference No. 2.2.1.3.6

Name Month_Plus

Input Enable/Disable (True/False)

Output DateTime (Structure)

Description Enable을 입력 받은 경우 Month에 대한 E

vent를 출력한다.

Process Specification - Modified

Reference No. 2.2.1.3.7

Name Day_Plus

Input Enable/Disable (True/False)

Output DateTime (Structure)

Description Enable을 입력 받은 경우 Day에 대한 Eve

nt를 출력한다.

DFD Level 6 - Modified State Transition Diagram for Controller 2.2.1.3.1(Time Setting Mode Controller)

Second_Plus

Hour_Plus

/ Enable “Second”

Tick[C]

/ Disable “Second”

Enable “Hour”

Tick[C]

/ Disable “Hour”

Enable “Minute”

Tick[C]

/ Disable “Minute”

Enable “Year”

Tick[C]

/ Disable “Year”

Enable “Month”

Tick[C]

/ Disable “Month”

Enable “Day”

Tick[C]

/ Disable “Day”

Enable “Second”

Minute_Plus

Year_Plus

Month_Plus

Tick[B]

/ Trigger “Second_Plus”

Tick[B]

/ Trigger “Hour_Plus”

Tick[B]

/ Trigger “Minute_Plus”

Tick[B]

/ Trigger “Year_Plus”

Tick[B]

/ Trigger “Month_Plus”

Day_Plus Tick[B]

/ Trigger “Day_Plus”

Initialization

A Button

B Button

C Button

D Button

Button

Control

1.5

Button Mode

Controller

2.1.1

A Button Input

B Button Input

C Button Input

D Button Input

Time

Keeping

Mode

2.1.2

Stop

Watching

Mode

2.1.3

Mode &

Button

Enable/Disable

Enable/Disable

Timekeeping

Controller

2.2.1.1

Stopwatch

Mode

Controller

2.2.2.1

Common

Mode

2.2.1.2

Res

ume

2.2.

2.4

start

2.2.

2.2

Lap

Tim

e

2.2.

2.6

Enable/Disable

Trigger

Trigger

Enable/Disable

Enable/Disable

Current

time 2.3.1

DateTime

Lap Time

Stopwatc

h

2.3.2

Trigger

Display

Mode

Display

Mode

Time

Setting

Mode

Controller

2.2.1.3.1 Mode & Button

Secon

d

_Plus 2.2.1.3

.2

Minute

_Plus 2.2.1.3

.4

Hour

_Plus 2.2.1.3

.3

Year

_Plus 2.2.1.3

.5

Month

_Plus 2.2.1.3

.6

Day

_Plus 2.2.1.3

.7

Enable/Disable

Enable/Disable

Enable/Disable

Enable/Disable

Enable/Disable

Enable/Disable

DateTime

INPUT

CONTROL

DFD - Modified

DateTime

DateTime

DateTime

DateTime

DateTime

Pau

se

2.2.

2.3

Res

et

2.2.

2.5

Reru

nnin

g

2.2.

2.7

Run

ning

2.2.

2.8

Stop

2.2.

2.9

Lap Time

Lap Time

Lap Time

Lap Time

Lap Time

Lap Time

Lap Time

OUTPUT

Display Mode

display

Display

Mode

Controller

3.1

Display

TimeKee

ping

Mode

3.2

Display

Stopwatc

h

Mode

3.3

Enable

Disable

Disable

Enable

display

DFD - 부분확대

Structured Charts - Notation

Basic Notation [Yourdon 1989] Variations

Modules

Library modules

Module call

Data Flow

Control Flow

Data module

Asynchronous

Module call

Iteration

Decision

Structured Charts – Digital Watch System (basic)

Basic Notation [Yourdon 1989] Variations

Modules

Library modules

Module call

Data Flow

Control Flow

Data module

Asynchronous

Module call

Iteration

Decision

Main

D Button C Button B Button A Button

Button

Controller

Mode

Controller

Timekeepig

Mode

Stopwatching

Mode

Button

Enable

Disable Enable

Disable

Mode

Button

Structured Charts – Digital Watch System (basic)

Timekeeping

Controller

Common

Mode

Mode

Button

Enable

Disable

Time Setting

Mode

Controller

Second

_Plus

Minute

_Plus

Hour

_Plus

Day

_Plus

Month

_Plus

Year

_Plus

Current Time

Enable

Disable

DateTime

Display Mode

DateTime

Structured Charts – Digital Watch System (basic)

Stopwatch

Controller

Reset Rerunning

Mode

Button

Trigger Enable

Disable Trigger

Lap Time

Container

Lap Time

Stop Running Pause Resume Start Laptime

Trigger Trigger Trigger Trigger Enable

Disable

Display Mode

Structured Charts – Digital Watch System (basic)

Display

Controller

Display

Timekeeping

Mode

Display

Stopwatch

Mode

Enable

Disable

Display

Display

Mode

Display

Enable

Disable

Display

Mode

Structured Charts – Digital Watch System (advanced)

Basic Notation [Yourdon 1989] Variations

Modules

Library modules

Module call

Data Flow

Control Flow

Data module

Asynchronous

Module call

Iteration

Decision

Main

D Button C Button B Button A Button

Button

Controller

Mode

Controller

Timekeepig

Mode

Stopwatching

Mode

Button

Enable

Disable

Enable

Disable

Mode

Button

Structured Charts – Digital Watch System (advanced)

Timekeeping

Controller

Common

Mode

Mode

Button

Enable

Disable

Time Setting

Mode

Controller

Second

_Plus

Minute

_Plus

Hour

_Plus

Day

_Plus

Month

_Plus

Year

_Plus

Current Time

Enable

Disable

DateTime

Display Mode

DateTime

Enable

Disable

Structured Charts – Digital Watch System (advanced)

Stopwatch

Controller

Reset Rerunning

Mode

Button

Trigger Enable

Disable Trigger

Lap Time

Container

Lap Time

Stop Running Pause Resume Start Laptime

Trigger Trigger Trigger Trigger Enable

Disable

Display Mode

Structured Charts – Digital Watch System (advanced)

Display

Controller

Display

Timekeeping

Mode

Display

Stopwatch

Mode

Enable

Disable

Display

Display

Mode

Display

Enable

Disable

Display

Mode

Q & A

감사합니다