Computer Science

A light pen is an optical input device that allows users to interact with a computer screen by detecting light from the screen when the pen touches it. It is not mechanical or electronic in the traditional sense, nor is it an output device.

Vector graphics are composed of paths, which are defined by mathematical equations representing lines, curves, and shapes. This differs from raster graphics, which are made up of pixels.

To make a PowerPoint photo album slide show play continuously, you need to set the slide show to loop continuously. This option ensures the presentation restarts automatically after the last slide, enabling continuous playback.

Pressing Ctrl + Shift + F8 in Microsoft Word activates the rectangular selection mode, allowing you to select a block of text in a rectangular shape rather than the usual linear selection.

An embedded system is a combination of computer hardware and software designed to perform a dedicated function within a larger mechanical or electrical system. Option D correctly describes this as the computer and software system that control the machine.

Lines, curves, freeform, and scribble are types of custom motion paths in PowerPoint that allow users to define specific movement paths for animations.

In MS Word, the ruler can be activated by going to the View tab on the ribbon and then selecting the Ruler option. This allows users to see and adjust margins, indents, and tabs visually.

In MS PowerPoint, to remove or hide the border of a shape, you select the 'No Line' option, which removes the outline of the shape. 'No Outline' is not an option in PowerPoint's shape formatting.

Vendor-created program modifications intended to update or fix software are commonly called patches. They address bugs, security vulnerabilities, or add minor improvements.

Diagnostic software is specifically designed to detect faults and their causes in computer systems, making it the correct answer. The other options do not relate to fault detection.