Computers, Part of Your Life

These flashcards cover key concepts related to input and output devices, their advantages and disadvantages, as well as considerations for specific user groups and health issues.

What is the purpose of input devices in computing?

To provide running software with instructions on what to do next or to supply data that must be processed.

Name at least three types of digital cameras mentioned in the notes.

Digital cameras include smartphone cameras, compact digital cameras, and DSLR cameras.

What are the advantages of using scanners?

Scanners allow for the electronic storage of documents, enable direct emailing of scanned copies, and can convert images into editable documents using OCR software.

What is biometric input?

Biometric input captures unique biological features of a person, such as fingerprints or iris patterns, for identification purposes.

List two advantages of biometric input.

1. High security, as it is tied to a single person. 2. Difficult to defeat compared to traditional passwords.

What is NFC and its primary use?

NFC stands for Near Field Communication, which is a technology that allows electronic devices to connect wirelessly for data exchange, primarily used for payment processing.

What is the main purpose of output devices?

To provide users with feedback from their interactions with a computing device and to deliver results or data from processing.

Name two types of output mentioned in the notes.

Soft copy (displayed on a screen) and hard copy (printed onto paper).

What are display devices used for in computing?

To provide choices for user interaction and to display the results of processing.

What is Plug and Play technology?

A feature of operating systems that automatically detects and configures a device for immediate use.

How does the use of touch screens provide advantages?

Touch screens offer more screen space, allow for immediate interaction, and require minimal training for users.

What health issues can arise from prolonged use of input devices?

Sore neck, backache, headaches, and repetitive strain injuries (RSI).

What limitations exist for POS systems?

When offline, they can be difficult to function, and they require expensive equipment and software.

What type of data can data collection devices capture?

Data that is detectable by sensors, such as temperature, heart rate, and weather conditions.

What are some disadvantages of using scanners?

Scanning can be time-consuming and the quality of the digital image relies on the quality of the original hardcopy.

What is the function of a barcode scanner in POS systems?

To automatically ‘recognize’ a product or item by scanning its barcode.

What can 3D printers create?

Physical, three-dimensional objects using CAD or 3D modeling software.

What is the importance of output in health-related applications?

Output enables the feedback necessary for monitoring health metrics like temperature or heart rate.

What challenges do physically challenged users face with input and output devices?

They may require specialized devices such as Braille keyboards, large-key keyboards, and eye tracking devices to interact with technology.