For keyboard input, when the user depresses a key, this generates an electronicsignal that is interpreted by the transducer in the keyboard and translated into thebit pattern of the corresponding IRA code. This bit pattern is then transmitted tothe I/O module in the computer.At the computer, the text can be stored in the sameIRA code. On output, IRA code characters are transmitted to an external devicefrom the I/O module.The transducer at the device interprets this code and sends therequired electronic signals to the output device either to display the indicated characteror perform the requested control function.
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