User

Memory D

Input

1.0

Output

2.0

MusicPlay

3.0

Sound

Display

Command(for Button)

Information of Musicfile

SoundDataMusicFile

Command Signal

User

Command(for Button) Command

SignalDistinguish

PressedButton

1.1

MusicPlay

3.0

DecideCommand

1.2

Information of Pressed Button

User

ChangeDisplay

2.2

MusicPlay

3.0

Sound

Display

Information of Musicfileand State

SoundDataSend

Speakerto Sound

2.1

Memory D

Input

1.0

Output

2.0

Player

3.3

Information of Musicfile

SoundData

Command Signal

DistinguishCommand

3.1

VolumeUp/Down

3.2 VolumeCommand

MusicFile

MusicplayCommand

VolumeValue

UserCommand(for Button)

Command SignalDistinguish

PressedButton

1.1

DecideCommand

1.2Information of

Pressed Button

ChangeDisplay

2.2

Sound

Display

Information of Musicfile and State

SoundData

SendSpeakerto Sound

2.1

Memory D

Player

3.3

DistinguishCommand

3.1

VolumeUp/Down

3.2 VolumeCommand

MusicFile

MusicplayCommand

VolumeValue

(1092014 학우 PPT 참고해서 제작.)

User

Hard Ware

CPU

메모리 I/O

OS

Play Music

RecordSound

I/O interface

InputButton Display