- 아노드 + 연결 - 케소드 - 연결 일반방식으로 켜기 void setup() { pinMode(2, OUTPUT); pinMode(3, OUTPUT); pinMode(4, OUTPUT); } void loop() { digitalWrite(2, HIGH); digitalWrite(3, HIGH); digitalWrite(4, HIGH); delay(10); } 배열선언해서 켜기 byte num[3][7] = { {1,1,1,1,1,1,0}, {0,1,1,0,0,0,0}, {1,1,0,1,1,0,1} }; //3개의 숫자를 표현하기 위해 //각각 숫자마다 7개의 led관리하기 위해 void displayNum(int n){ for(int i=0; i

package com.example.graphic; import androidx.appcompat.app.AppCompatActivity; import android.content.Context; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.os.Bundle; import android.view.View; class MyView extends View { public MyView(Context context){ super(context); setBackgroundColor(Color.BLUE); } protected void onDraw(Canvas can..

activity_main.xml MainActivity.java package com.example.contextmenu; import androidx.appcompat.app.AppCompatActivity; import android.content.Context; import android.graphics.Color; import android.os.Bundle; import android.view.ContextMenu; import android.view.MenuItem; import android.view.View; import android.widget.TextView; public class MainActivity extends AppCompatActivity { TextView text; @..

activity_main.xml MainActiviy.java package com.example.optionmenu2; import androidx.appcompat.app.AppCompatActivity; import android.os.Bundle; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.widget.Toast; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(save..

package swing.frame; import javax.swing.JFrame; public class MyFrame extends JFrame { public MyFrame(String title) { this.setTitle(title); //this없어도됨 //title설정 this.setSize(680, 700);//size설정(width,height) setLocation(800, 300); //위치 설정(x,y) //종료관리(보통 EXIT_ON_CLOSE를 사용, 상수3) setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //창그리기 this.setVisible(true); } public static void main(String[] args) { /..