User

Memory D

Input

1.0

Output

2.0

MusicPlay

3.0

Sound

Display

Command(for Button)

Information of Musicfile

SoundDataMusicFile

Command Signal

User

DistinguishPressedButton

1.1

MusicPlay

3.0

Command(for Button) Command

Signal

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

(1092014 학우 PPT 참고해서 제작.)

User

Hard Ware

CPU

메모리 I/O

OS

Play Music

RecordSound

I/O interface

InputButton Display