A computer is a machine which helps us to calculate, simulate and store different scenarios. For example, in order to write an e-mail, instead of paper and pen first we use a software (or program) called wordprocessor which helps us enter sentences through keyboard (Input), computer's screen (output) to read, and modem (output/input) to send it to a distant relative, friend, etc. (118 KB)
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Hello, my name is Jack Sparrow. I'm a 50 year old self-employed Pirate from the Caribbean. 
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