Input and Output Devices Quiz

Describe two situations where using a microphone would be a more suitable method of input than using a keyboard.

Answer explanation

Using a microphone is ideal for voice commands in hands-free situations, like driving, and for recording audio in interviews or podcasts, where typing would be impractical.

Give one use of a touch screen as an input device.

Answer explanation

A touch screen allows users to interact directly with what is displayed, making it an effective input device for selecting options, typing, or navigating applications, enhancing user experience and accessibility.

A barcode reader is an example of a direct data entry (DDE) device. Give two other examples of DDE devices.

Answer explanation

Two other examples of direct data entry devices are keyboards and touch screens. Both allow users to input data directly into a computer system, similar to how a barcode reader captures data.

A supermarket uses Electronic Point of Sale (EPOS) terminals. Give two input devices used at an EPOS terminal and state what data is input using each device.

Answer explanation

Two input devices at an EPOS terminal are a barcode scanner and a keyboard. The barcode scanner inputs product codes by scanning barcodes, while the keyboard is used to input prices or special item codes manually.

Describe how a magnetic stripe reader is used to read data from a card.

Answer explanation

A magnetic stripe reader reads data by swiping a card through it. The reader detects the magnetic field changes in the stripe, converting them into electrical signals, which are then processed to retrieve the stored information.

State one advantage of using a QWERTY keyboard instead of an on-screen keyboard.

Answer explanation

A QWERTY keyboard allows for faster typing and better tactile feedback compared to an on-screen keyboard, which can be slower and less accurate due to the lack of physical keys.

Give two advantages of using a graphics tablet rather than a mouse to create drawings.

Answer explanation

Using a graphics tablet allows for more precise control and pressure sensitivity, enabling artists to create smoother lines and varied strokes, which enhances the overall quality of digital drawings compared to a mouse.

Give two advantages of using a touchpad rather than a mouse with a laptop computer.

Answer explanation

Using a touchpad allows for greater portability since it is built into the laptop, eliminating the need for an external device. Additionally, touchpads often support multi-touch gestures, enhancing navigation and efficiency.

Explain the difference between a digital camera and a webcam.

Answer explanation

A digital camera captures high-quality images and often has advanced features for photography, while a webcam is designed for video streaming and typically has lower resolution and fewer settings.

Describe what is meant by a sensor. Give two examples of sensors used in a weather station.

Answer explanation

A sensor is a device that detects and measures physical properties. In a weather station, examples include a thermometer (measures temperature) and a barometer (measures atmospheric pressure).