Input & Output Devices Quiz

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Grade 10 tech basics

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mary juliet.F

India

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Input & Output Devices Quiz


Input & Output Devices QuizOnline version Grade 10 tech basics by mary juliet.F 1 Which device is primarily used to input text to a computer? a Keyboard b Printer c Mouse d Monitor 2 What is the main function of a mouse? a To process data b To display graphics c To input location and actions via movement and clicks d To print documents 3 Which device is considered an output device? a Monitor b Scanner c Keyboard d Microphone 4 Which device can be both input and output, depending on usage? a Printer b Touchscreen c Scanner d Speaker 5 Which peripheral is used to capture audio input? a Speaker b Microphone c Monitor d Printer 6 What does a printer do? a Sends data to the internet b Produces hard copies from digital documents c Displays information on screen d Reads RFID tags 7 Which input device is best for selecting items quickly without a mouse? a Keyboard shortcuts b Webcam c Printer d Speakers 8 Which device would you use to scan a document into the computer? a Headphones b Scanner c Monitor d Printer 9 What is a likely use of a webcam? a Video capture and conferencing b Storing data offline c Printing documents d Providing loud audio output 10 Which component handles sending data from a computer to another device? a CPU b Network interface card (NIC) c Graphics card d Sound card 11 When you press a key on a mechanical keyboard, how does the computer know which character you typed? a An optical sensor detects the shadow of the falling keycaps. b The keypress completes an electrical circuit, sending a specific scan code to the keyboard controller. c The key uses pressure-sensitive resistors to measure the exact force of your finger. d A tiny microphone inside the keyboard identifies the specific acoustic pitch of the click. 12 How does a standard optical computer mouse track movement across a mousepad? a It uses a tiny rolling ball that turns internal wheels. b It tracks its position relative to the computer screen using infrared signals. c An LED or laser illuminates the surface, and a low-resolution camera takes thousands of successive images per second to detect changes in position. d It relies on a built-in gyroscope that senses tilting and acceleration forces. 13 What is the primary function of an Analog-to-Digital Converter (ADC) inside a digital microphone? a It amplifies the physical sound waves so they are loud enough for the computer speaker. b It converts continuous physical sound waves (electrical voltages) into discrete binary numbers. c It compresses the audio file into an MP3 format to save storage space. d It filters out background noise by reversing the phase of the incoming sound wave 14 How does a flatbed image scanner translate a printed physical document into digital pixels? a A light source illuminates the document, and reflected light is captured by a linear array of Charge-Coupled Devices (CCD) or CIS sensors. b An array of tiny electromagnets senses the density of the ink on the paper. c X-rays penetrate the paper to build a 3D structural map of the fibers. d Thermal sensors measure how much heat the black ink absorbs compared to the white paper. 15 How do Liquid Crystal Display (LCD) monitors control which colors appear on the screen? a Tiny dynamic nozzles spray colored ink behind the glass panel in real time. b An electron gun fires colored particles directly into the eyes of the viewer. c Electric currents untwist liquid crystals to let varying amounts of backlight pass through red, green, and blue sub-pixel filters. d The glass panel chemically changes composition to change colors when heated. 16 What is the mechanical mechanism that allows a standard dynamic loudspeaker to produce audible sound waves? a A laser rapidly heats and cools the air to create pressure waves. b Varying electrical currents pass through a voice coil, interacting with a permanent magnet to physically vibrate a flexible cone. c High-pressure air streams are chopped into pieces by a rotating physical shutter. d Static electricity pulls individual air molecules into alignment. 17 How does a laser printer fuse toner powder onto a physical sheet of paper? a The toner is mixed with fast-drying chemical solvents that evaporate instantly. b An electrostatic charge attracts the toner to specific areas of the paper, which is then permanently melted onto the fibers using heated rollers. c The paper is exposed to powerful UV light that activates a glue backing on the toner. d Microscopic needles punch the powder directly into the paper grain. 18 How does a capacitive touchscreen detect the exact location of your finger touches? a Your finger physically bends an outer flexible layer until it touches an underlying grid. b Your finger absorbs a tiny amount of the screen's electrostatic charge, altering the capacitance at that specific intersection. c A grid of light beams on the surface is broken by the shadow of your finger. d A thermal camera beneath the glass senses the body heat radiating from your hand. 19 What role does the 'driver' software play in managing input and output hardware devices? a It physically increases the voltage sent to external USB ports. b It cleans the physical internal sensors of dust using high-frequency software signals. c It acts as a translator between the operating system's generic commands and the specific hardware's unique binary instructions. d It safely backs up all user files to a cloud server when a device is unplugged. 20 Why is an inkjet printer classified strictly as an output device rather than an input device? a Because it reads information from physical documents and converts it to digital formats. b Because it processes digital data received from the computer system and translates it into physical form (ink patterns on paper). c Because it sends commands back to the CPU to control print queues. d Because it can function completely without being connected to a computer processing unit. Feedback 1 A keyboard lets you enter letters, numbers and symbols. 2 A mouse translates hand movements into cursor movement and clicks. 3 Monitors display information produced by the computer. 4 Touchscreens can input touches and display output. 5 Microphones convert sound into electrical signals for the computer. 6 Printers output physical paper copies of digital content. 7 Hotkeys let you perform actions faster without the mouse. 8 A scanner converts physical documents into digital images or text. 9 Webcams capture live video for calls or recordings. 10 NICs enable data transmission over networks.

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Input & Output Devices Quiz

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About this activity

Created by

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Input & Output Devices QuizOnline version

by mary juliet.F

Which device is primarily used to input text to a computer?

What is the main function of a mouse?

Which device is considered an output device?

Which device can be both input and output, depending on usage?

Which peripheral is used to capture audio input?

What does a printer do?

Which input device is best for selecting items quickly without a mouse?

Which device would you use to scan a document into the computer?

What is a likely use of a webcam?

Which component handles sending data from a computer to another device?

When you press a key on a mechanical keyboard, how does the computer know which character you typed?

How does a standard optical computer mouse track movement across a mousepad?

What is the primary function of an Analog-to-Digital Converter (ADC) inside a digital microphone?

How does a flatbed image scanner translate a printed physical document into digital pixels?

How do Liquid Crystal Display (LCD) monitors control which colors appear on the screen?

What is the mechanical mechanism that allows a standard dynamic loudspeaker to produce audible sound waves?

How does a laser printer fuse toner powder onto a physical sheet of paper?

How does a capacitive touchscreen detect the exact location of your finger touches?

What role does the 'driver' software play in managing input and output hardware devices?

Why is an inkjet printer classified strictly as an output device rather than an input device?

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