Codes consisting of lines of varying widths or lengths that are computer-readable are known as__________?
Correct answer: D. a bar code
- A. an ASCII code
- B. a magnetic tape
- C. an OCR scanner
- D. a bar code
Explanation
A barcode represents data through machine-readable lines or patterns of varying widths. ASCII is a character code, and an OCR scanner is a device rather than the code itself.
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About Hardware and Software
Hardware includes the physical components of a computer, such as the CPU, motherboard, registers, memory, storage devices and peripheral equipment. Software covers system software, application software, utilities, drivers and firmware, with attention to how the operating system manages hardware and how software differs from the physical equipment it controls.
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