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.
A contemporary computer system consists of a central processing unit, primary stor-. age, secondary storage, input devices, output devices, and communications devices. (see Figure 4-1). The central processing unit manipulates raw data into a more useful. form and controls the other parts of the computer system.