What is a computer?

Computer is an electronic machine operating under the control of instructions stored in its own memory
– Accepts data
– Manipulates data
– Produces results
– Stores results

Input: accepting data that has been represented in a way the computer can use.

Processing: performing arithmetic or comparison (Logical) operation on the represented data.

Output: Displaying results.

Storage: Storing results for later reuse.

Programs: A computer program is a list of instruction, written in a programming language, that tell the computer who to perform that four simple operation in order to accomplish a task. 

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