IGCSE Information & Communication Technology Paper-1: Specimen Questions with Answers 45 - 45 of 45

Question number: 45

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Appeared in Year: 2009

Essay Question▾

Describe in Detail

Computers are used to manage data. Name the different methods used to input data along with its advantages?

Explanation

  • Different methods used to input data are:

    • Keyboard/typing in data

    • A bar code (reader)

    • A magnetic stripe (reader)

    • Touch screen

  • Keyboard: A computer keyboard is a typewriter-style device which uses an arrangement of buttons or keys to act as mechanical levers or electronic switches.

  • Barcode reader: A barcode reader (or barcode scanner) is an optical scanner that can read printed barcodes, decode the data contained in the barcode and send the data to a computer.

  • Magnetic stripe reader: A magnetic stripe reader, also called a magstripe reader, is a hardware device that reads the information encoded in the magnetic stripe located on the back of a plastic badge.

  • Touch screen: A touch screen is a display device that allows the user to interact with a computer by using their finger or stylus. They can be a useful alternative to a mouse or keyboard for navigating a GUI.

Advantages:

  • Scanning bar codes/swiping magnetic stripes/touch screen gives fast data entry, keying in data can be slow.

  • Keyboards/touch screens are robust/bar codes can be flimsy.

  • Scanning bar codes/swiping magnetic stripes/touch screen reduces errors.

  • Keying in data can lead to data errors.

  • Magnetic stripes are more robust than bar codes.

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