ICT Input Device

What is the primary function of a keyboard?

• Inputting data by pressing keys

• Playing music,

• Displaying images

• Sending emails

Name one example of a pointing device.

• joystick

• trackpad

• mouse

• keyboard

How does a microphone input data into a computer system?

• A microphone inputs data into a computer system by using Bluetooth technology to send signals wirelessly.

• A microphone inputs data into a computer system by converting visual images into digital data.

• A microphone inputs data into a computer system by converting sound waves into electrical signals that are transmitted to the computer for processing.

• A microphone inputs data into a computer system by directly transferring sound waves to the computer's hard drive.

What is the purpose of a scanner as an input device?

• To play music

• To cook food

• To send emails

• To convert physical documents or images into digital format.

Explain the role of a webcam in ICT.

• A webcam in ICT is a device used for printing documents.

• A webcam in ICT is a software program that enhances audio quality.

• A webcam in ICT is a hardware device that captures video and images, enabling visual communication and collaboration over the internet.

• A webcam in ICT is a tool for creating 3D models.

What are the different types of touchscreens used as input devices?

• Ultrasonic

• Optical

• Resistive, Capacitive, Infrared

• Piezoelectric

Describe the working principle of a barcode reader.

• A barcode reader uses radio waves to communicate with the barcode and retrieve the data.

• A barcode reader emits light onto the barcode, reads the reflected light to detect the pattern of bars, and decodes the information.

• A barcode reader scans the barcode with a camera and interprets the colors of the bars.

• A barcode reader relies on sound waves to detect the vibrations of the barcode and extract the information.

What is the significance of a digital camera as an input device?

• It converts sound into digital data.

• It projects holographic images.

• It prints images directly onto paper.

• It converts images or videos into digital data for storage and manipulation.

How does a joystick function as an input device?

• A joystick converts sound waves into visual signals.

• A joystick uses brain waves to navigate digital interfaces.

• A joystick translates physical movements into digital signals for device interpretation.

• A joystick measures temperature changes to control device functions.

Discuss the importance of a graphics tablet in ICT.

• A graphics tablet is only useful for playing games in ICT.

• A graphics tablet is too expensive and not worth the investment in ICT.

• A graphics tablet is essential in ICT for precise and natural input in digital art, graphic design, and illustrations, offering features like pressure sensitivity and pen tilt recognition.

• A graphics tablet has no impact on the quality of work in ICT.