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The tapping on the keyboard, the clacking of the printers, the rumble of whirling disk drives, the changing flashes of color on a computer screen-these are the attention-getters. However, it is really the software- the planned, step-by-step instructions required to turn data into information-that makes a computer useful. The processor, more formally known as the central processing unit , has the electronic circuitry that manipulates input data into the information people want. The central processing unit executes computer instructions that are specified in the program. The processing of input to output is directed by the software but performed by the hardware. In contrast to analog computers, digital computers represent information in discrete form, generally as sequences of 0s and 1s . Computer Hardware Liquid crystals could soon be produced more efficiently and in a more environmentally friendly way. A challenge to adopting augmented reality in wider applications is working with...