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diff --git a/src/electronics/components/ec555.h b/src/electronics/components/ec555.h
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+/***************************************************************************
+ *   Copyright (C) 2003 by David Saxton                                    *
+ *   [email protected]                                                    *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ ***************************************************************************/
+
+#ifndef EC555_H
+#define EC555_H
+
+#include "component.h"
+
+#include <qstringlist.h>
+
+/**
+@short 555 IC
+@author David Saxton
+*/
+class EC555 : public Component
+{
+public:
+	EC555( ICNDocument *icnDocument, bool newItem, const char *id = 0L );
+	~EC555();
+	
+	virtual bool canFlip() const { return true; }
+	static Item* construct( ItemDocument *itemDocument, bool newItem, const char *id );
+	static LibraryItem *libraryItem();
+	
+	virtual void stepNonLogic();
+	virtual bool doesStepNonLogic() const { return true; }
+	
+private:
+	Pin * ground;
+	Pin * trigger;
+	Pin * output;
+	Pin * reset;
+	Pin * control;
+	Pin * threshold;
+	Pin * discharge;
+	Pin * vcc;
+
+	Resistance *m_r1;
+	Resistance *m_r23;
+	Resistance *m_po_sink;
+	Resistance *m_po_source;
+	Resistance *m_r_discharge;
+	
+	bool old_com1;
+	bool old_com2;
+	bool old_q;
+};
+
+#endif