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March 31, 2015. 1  An IRQ (Interrupt Request) number is assigned to all the hardware devices installed in a computer that are used to input information, for example the mouse or the keyboard. On a PC, some IRQs are predefined, so the Keyboard controller is always given an IRQ of 1, for example.
ICQ enables you to send messages, files (single, multiple or whole directories), and URLs directly to your friends. In addition, you can initiate an IRC-style chat session or voice and video-voice connection and play games with other ICQ members that you are in touch with. Your contact is signalled of an incoming event in real time and has immediate access to it.