to follow or endeavor to follow as a model or example: to imitate an author's style; to imitate an older brother. to mimic; impersonate: The students imitated the teacher behind her back. to make a copy of; reproduce closely. to have or assume the appearance of; simulate; resemble.
The input device might be a keyboard, the output device might be a monitor, a communication device might be a modem, a secondary storage device might be disk drive, and the processing devices include central processing unit (CPU) and main memory.
The inputs are said to be fed to the systems in order to get the output. For example, input of a 'computer system' is an input unit consisting of various input devices like a keyboard, mouse, joystick etc.or example, in a 'computer system' there is a boundary for the number of bits, the memory size etc. that is responsible for different levels of accuracy on different machines (like 16-bit, 32-bit etc.).