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Which are the input devices that enable direct data entry into a computer system from source documents?

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Which are the input devices that enable direct data entry into a computer system from source documents?

(a) Data Scanning devices

(b) Data retrieving devices

(c) Data acquiring devices

(d) System Access devices

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Right answer is (a) Data Scanning devices

Best explanation: They are referred to as data scanning devices. They eliminate the need to key in text data into the computer. It demands the high quality of input documents.
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