Explanation

• "CD" most commonly stands for Compact Disc
• Used for storing digital audio, software programs, documents, and videos
• Origin: Co-developed by Philips and Sony, introduced in the early 1980s

Last updated by NA on 26 April 2026

Explanation

• HTML: Hypertext Markup Language.
• Purpose: Creates and structures web pages.
• HTML File Extension: .html or .htm.
• It uses tags to structure content such as headings, paragraphs, images, links, and tables.

Last verified on 11-08-2026

Explanation

• SMS stands for Short Message Service.
• It is a text messaging service used on mobile phones and other communication systems.
• SMS was defined in 1986 as part of the Global System for Mobile Communications (GSM) standards.
• The first SMS message was sent on 3 December 1992.
• The first SMS was sent by Neil Papworth from a computer to a Vodafone mobile phone.
• First SMS Content: “Merry Christmas”.

Last verified on 09-08-2026

Explanation

• GUI stands for Graphical User Interface.
• It is a type of user interface that allows users to interact with electronic devices using icons, windows, menus, and buttons instead of typing commands.
• The first GUI was developed at Xerox PARC in the early 1980s.

Additional information:

• CLI – Command Line Interface
• CUI – Character User Interface
• VUI – Voice User Interface
• NUI – Natural User Interface

Last verified on 03-07-2026

Explanation

• CMS stands for Content Management System.
• It is a software platform used to create, manage, edit, and publish digital content.
• It allows users to manage website content without requiring extensive coding knowledge.
• Common CMS functions include managing web pages, blog posts, images, and other media.
• Examples include WordPress, Joomla, and Drupal.

Last verified on 09-08-2026