IGCSE ICT: Input Devices QuizVersión en línea Test your ICT input knowledge por Ramla Hameema 1 Which device is a manual input that converts keystrokes into digital data? a Keyboard b Microphone c Mouse d Scanner 2 What converts analog signals from sensors into digital data for a computer? a ADC (Analog-to-Digital Converter) b Modem c DAC (Digital-to-Analog Converter) d JPEG Encoder 3 Which scanning method reads 1D barcodes at checkout? a QR Code Scanner b CCD camera c Barcode Scanner d 3D Scanner 4 Which code contains a matrix of pixels and can store thousands of characters? a Barcode b QR Code c Code 39 d Data Matrix 5 Which sensor type detects proximity without contact? a PIR sensor b Temperature sensor c Humidity sensor d Proximity sensor 6 Which device stores a printed document as a digital image using light and sensors? a 3D Scanner b Digital Camera c Barcode Scanner d Flatbed Scanner 7 Which input device uses a lens, CCD and ADC to capture images? a Digital Camera b 3D Scanner c Scanner d Microphone 8 Which 3D imaging tech uses X-rays to create multiple 2D slices? a SPECT b CT (Computed Tomography) c MRI d Ultrasound 9 Which input device is best for collecting touch data on modern devices? a Capacitive Touch Screen b Mouse c Resistive Touch Screen d Infrared Touch 10 Which device would you use for extracting text from a scanned document? a DLF (Document LightFocusing) b Steganography Tool c OCR (Optical Character Recognition) d MAC (Machine Articulation Code)
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