What is interfacing in microprocessor?

The microprocessor connects with many internal and external devices to process the task successfully. This procedure called interfacing in a microprocessor. In the microprocessor has i/o interfacing and memory interfacing. The connectivity of input devices (keyboard) and output devices (screen) with a microprocessor called I/O interfacing. The microprocessor accesses the memory to read the instruction code and store the data called memory interface.