Answer:
A. a primary work from which information is taken.
Explanation:
A bar code is a series of bars and spaces representing numbers or letters.
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Explanation:</u></h3>
A method that is used for the purpose of representing a data in the form of a picture or image that can be easily understood by the machine. It consists of many lines that has different widths and spaces. They either represent the letter or a number. These are mainly used for the representation of data in the machine understandable format.
For example an UPC-A bar codes has 12 numbers. The numbering system is represented by the first digit. The manufacturer will be represented by the next five digits in it. The product will be represented by the five digits following it. Check digit is represented in the last digit.
Answer: ......wlc;)
Explanation: Any information or data sent to a computer for processing is considered input. Input or user input is sent to a computer using an input device. The picture is an illustration of the difference between input and output. The input example (top) shows data being sent from a keyboard to a computer
Answer:
Im pretty sure Domain name system but dont trust me
Explanation:
brackets, exponents, division, multiplication, addition, and subtraction
