Computer practice question for SSC. Select an option to check your answer, read the explanation and continue practicing.
Which of the following converts analogue information into digital form?
Correct Answerसही उत्तर
C. DigitizerC. डिजिटाइज़र
Explanationव्याख्या
The correct answer is Digitizer.
According to the source, a digitizer is a machine that converts an analog object, image or signal into a digital, computer-readable format.
Therefore the source-supported revision chain is: Digitizer — converts Analog Object
Image
Signal — into Digital Computer-readable Format.
Optical Mark Reading, Barcode Reader and Gamepad are distractors.
The key conceptual distinction is the conversion of analogue information into a form that a computer can process.
The source explicitly broadens the idea beyond signals by mentioning objects and images as well.
This makes the term useful for definition-based questions in which the word 'digitizer' may not appear directly in the prompt.
Students should not confuse Digitizer with devices whose purpose is merely reading marks or barcodes, because the source defines Digitizer by analogue-to-digital conversion.
The book does not discuss sampling, resolution, analogue-to-digital converters, tablets, scanners or signal-processing details in this entry.
Therefore those facts have not been introduced from outside knowledge.
A reverse question may ask what a digitizer does; according to the source, it converts an analog object, image or signal into a computer-readable digital form.
Quick revision: Analog → Digital
Computer-readable = Digitizer.
Therefore option (c), Digitizer, is correct.
सही उत्तर Digitizer है। स्रोत के अनुसार Digitizer एक machine है जो किसी analog object, image या signal को digital अर्थात computer-readable format में convert करती है। इसलिए complete source-supported revision chain है: Digitizer — Analog Object/Image/Signal — Digital Computer-readable Format। Optical Mark Reading, Barcode Reader और Gamepad distractors हैं। इस question का मुख्य concept analogue information को computer द्वारा पढ़े जा सकने वाले digital form में convert करना है। Source केवल signal नहीं बल्कि object और image का भी उल्लेख करती है। इसलिए definition-based question में अगर पूछा जाए कि analogue object या image को digital form में बदलने वाला device कौन-सा है, तो answer Digitizer होगा। Students इसे केवल marks या barcodes read करने वाले devices से confuse न करें। Book इस entry में sampling, resolution, ADC, scanner technology या signal-processing की technical details नहीं देती। इसलिए outside technical knowledge को source-derived content के रूप में नहीं जोड़ा गया है। Reverse question: Digitizer क्या करता है? Source के अनुसार analog object, image या signal को computer-readable digital format में बदलता है। Quick revision: Analog → Digital = Digitizer। इसलिए विकल्प (c), Digitizer, सही उत्तर है।
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