Which is the following is a computer operating system?

Examples are Hard drives, USB flash drives, DC-RW, and DVD-RAM drives. ...

UNIX is generally used by desktop computers, laptop computers and super computers. UNIX is a multiuser operating system. it has traditionally been applied to family of multitasking, multiuser operating system that was derived originally from AT&T UNIX operating system in 1970's.

Bluetooth is a radio technology. Bluetooth operates at frequencies between 2.402 and 2.480 GHz, or 2.400 and 2.4835 GHz including guard bands 2 MHz wide at the bottom end and 3.5 MHz wide at the top. This is in the globally unlicensed (but not unregulated) industrial, scientific and medical (ISM) 2.4 GHz short - range radio frequency band.

Mail merge is a Microsoft Word feature often used to produce a number of similar documents, including elements from a separate data document (e.g. a database, spreadsheet or Outlook contacts file).

The World Wide Web (WWW) is a system of interconnected hypertext documents accessed via the Internet. It was created in 1989 by Tim Berners-Lee and has since become a primary means of information exchange, communication, and commerce. The WWW uses the HTTP protocol to transfer data and is accessed through web browsers such as Chrome, Safari, and Firefox.

The process of starting or resetting a computer is commonly referred to as "booting" or "rebooting." When a computer is first turned on or restarted, it goes through a sequence of operations known as the "boot process." During this process, the computer's hardware components are initialized, the operating system is loaded into memory, and various startup programs and services are launched.

Antivirus software is a program designed to detect and remove computer viruses and other malicious software, commonly known as malware. Antivirus software scans files and programs on a computer for any known viruses or malware and alerts the user if it finds any. It may also remove or quarantine infected files and can often protect against future infections through real-time scanning.There are many antivirus software programs available, and some of the popular ones includeNorton AntiVirusMcAfee AntivirusBitdefender Antivirus PlusAvast AntivirusAVG AntivirusKaspersky Anti-VirusTrend Micro Antivirus+ SecurityESET NOD32 AntivirusMalwarebytes Anti-MalwareWindows Defender (built-in with Windows 10)Adobe is a software company that provides a range of creative, marketing, and document management solutions. Its products are used by individuals, small businesses, and large enterprises for tasks such as graphic design, video editing, digital marketing, and document management. Some of Adobe's popular software products include Photoshop, Illustrator, InDesign, Premiere Pro, Acrobat, and Experience Cloud. Adobe is known for its focus on innovation and creativity, and its products are used by professionals in many industries, including photography, graphic design, film, web development, and publishing. Adobe's mission is to help people and businesses communicate and create in ways that were previously not possible, and it continues to develop new tools and technologies to empower its users.

'Shift+Del' command permanently deletes the file without moving it to the recycle bin. If you only press the delete key, the file will just be moved to recycle bin and you have to manually delete it.

PRSP - এর পূর্ণ রূপ হলো - - Poverty Reduction Strategy Papers. এর অর্থ হলো - দারিদ্র্য বিমোচন কৌশলপত্র।

ডট পার ইঞ্চ দ্বারা রেজুলেশন বুঝায়। ডিসপ্লে পর্দা বা স্ক্রীনে প্রদর্শিত ছবির সূক্ষ্মতাকে রেজুলেশন বলে। পর্দার প্রতি ইঞ্চিতে যত বেশি পিক্সেল থাকবে ছবি তত বেশি সূক্ষ্ম হবে।