Introduction to Computers

These flashcards cover key concepts from the lecture on computers, including input and output devices, memory types, printers, and ergonomics.

What is the primary function of input devices in computers?

To get data and instructions into the computer.

What are shortcut keys?

Keys or combinations of keys used to perform certain commands.

What is the function of the Esc key?

It allows you to cancel options or exit out of menus.

Define Bluetooth technology.

A technology that allows devices to communicate wirelessly over a short distance.

What is a monitor?

A device that displays visual output from the computer, measured in size and resolution.

What is the purpose of a printer queue?

A temporary storage area where print tasks wait until the printer is ready to print.

What distinguishes 3D printers from other types of printers?

They create three-dimensional objects by adding layers of melted plastic.

What is the difference between volatile and non-volatile memory?

Volatile memory loses its contents when power is off, while non-volatile memory retains its contents.

What is e-waste?

Broken or outdated electronic equipment that can be harmful to people and the environment.

What does 'green computing' refer to?

Using computers in a way that is sensitive to the environment.

What is a Point of Sale (POS) system?

An ICT system designed to speed up the sale of goods and services.

What does the term 'ergonomics' entail?

The study and design of workplace equipment to ensure comfort and safety.

What is the maximum resolution commonly associated with monitors?

1920 x 1080 pixels.

What are the advantages of using wireless input devices?

Less clutter and a wider range of movement.

What does a graphics card do?

Generates images that are displayed on the monitor.

What is the main storage device of a computer?

The hard drive or SSD, which keeps data even when the power is off.

What is a file manager?

A utility program that allows users to manage files and folders.

Explain file extension.

A set of characters added to the end of a file name that identifies the type of file.

What is the significance of the Windows key on a keyboard?

It brings up the Start menu.

What are the key functions of an operating system?

It manages the computer's hardware and software resources.

What are peripheral devices?

Hardware components that enhance a computer's functionality but are not essential for operations.

Define 'convergence' in technology.

The trend of combining multiple technologies into a single device.