Direct Data Entry And Associated Devices
Overview
Tap a card on a reader and the bus lets you on; wave a phone over a square pattern and a website opens; an exam board feeds ten thousand answer sheets through a machine and the results appear in minutes. None of this involves anyone typing. This is direct data entry, where a device captures data automatically with little or no human effort, faster and more accurately than a keyboard ever could.
In this lesson you will meet the direct data entry devices the Cambridge syllabus requires: magnetic stripe readers, chip and PIN readers, RFID readers, optical mark recognition, optical character recognition, barcode readers and QR code scanners. You will learn how each one captures data, where it is used, and how to weigh its advantages and disadvantages so you can pick the right one for a given system.
Objectives
- Direct data entry.
- Characteristics, uses, advantages and disadvantages of direct data entry devices including: magnetic stripe reader, chip and PIN reader, Radio Frequency Identification (RFID) reader, Optical Mark Recognition/Reader (OMR), Optical Character Recognition/Reader (OCR), bar code reader, QR scanner.
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Lesson Evaluation
Congratulations on completing the lesson on Direct Data Entry And Associated Devices. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- Which device reads data from a tag using radio waves and needs no line of sight? A. Barcode reader B. RFID reader C. OMR D. Magnetic stripe reader Answer: B
- An examination board needs to read multiple-choice answer sheets where candidates shade boxes. The most suitable device is: A. OCR B. Scanner C. OMR D. QR scanner Answer: C
- Which technology converts a printed document into editable text? A. OMR B. OCR C. Magnetic stripe reader D. Chip and PIN reader Answer: B
- Compared with a barcode, a QR code can: A. Hold less data B. Only be read by a laser scanner C. Hold much more data and be read by a camera D. Never be encrypted Answer: C
- Which is the most secure way of paying with a card in a shop? A. Magnetic stripe B. Chip and PIN C. Barcode D. OMR Answer: B
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