Which of the following is not an input device?

Recent Activities

	General Knowledge More questions and answers on- General Knowledge
	Aptitude More questions and answers on- Aptitude
	Number System More questions and answers on- Number System
	Time and Distance More questions and answers on- Time and Distance
	Average More questions and answers on- Average
	Time and work More questions and answers on- Time and work
	Simple and compound interest More questions and answers on- Simple and compound interest
	Mensuration More questions and answers on- Mensuration
	Number series More questions and answers on- Number series
	Pipes and Cisterns More questions and answers on- Pipes and Cisterns
	Linear Equations More questions and answers on- Linear Equations
	Quadratic Equations More questions and answers on- Quadratic Equations
	Simplification More questions and answers on- Simplification
	Approximation More questions and answers on- Approximation
	Word problems More questions and answers on- Word problems