Input and Output devices

                 Input and Output devices

• To begin with, when a key is pressed the runner tone attached to the key downwards. 
• The pressure of the fingertip in pressing the key leads to planner down on two electronic contact. 
• When these two contacts come together, the electricity flows through the circuit. 
• When you lift your finger, the spring moves up lifting the key upwards and the electric circuit is broken. 
• Now the signal produced by two contacts coming together is passed onto the chip called as microprocessor. 
• The microprocessor holds the scan card. The pressed key stroke is smashed with the scan card. 
• The microprocessor passes this required information to RAM. 
• Based on the key stroke pressed, the signal is passed from the system to the monitor. 
• And finally, the result is the character displayed on the screen.