De 101 Computer Fundamental

The CPU (Central Processing Unit) is the brain of any computer system. It is responsible for executing instructions, performing calculations, and coordinating the activities of all the other hardware components. The CPU carries out the instructions stored in memory, performs arithmetic and logical operations in the ALU (Arithmetic Logic Unit), and controls the flow of data and instructions within the computer system through the control unit.

The computer has the ability to store data, retrieve data, and process data. This means that it can save information, access it when needed, and manipulate it according to instructions. All of these functions are essential for the functioning of a computer and are necessary for tasks such as data storage, information retrieval, and computational operations.

Web cameras are capable of recording videos, taking pictures, and engaging in video conferencing. These devices have built-in cameras and microphones that enable users to capture videos and images. Additionally, they can be used for video conferencing purposes, allowing individuals to communicate and interact with others in real-time through video and audio. Therefore, the correct answer is "All of the above."

The given options include examples of software, such as web browser, Microsoft Word, and Corel Draw. However, a keyboard is not a software but a hardware device used for inputting data into a computer. Therefore, the correct answer is keyboard.

Installing antivirus software is the best way to guard against malware because antivirus programs are specifically designed to detect, prevent, and remove malicious software from a computer system. They continuously monitor the system for any suspicious activities and can quickly identify and quarantine or delete any malware that is detected. Antivirus software also often includes features such as real-time scanning, firewall protection, and automatic updates to ensure maximum security against malware threats. Therefore, installing antivirus software is an effective measure to protect against malware infections.

Maintaining a computer involves various tasks to ensure its optimal performance and longevity. Keeping it physically clean is important to prevent dust and debris from accumulating, which can cause overheating and damage to internal components. Protecting it from malware is crucial to safeguard against viruses, spyware, and other malicious software that can compromise the system's security and functionality. Backing up important files is necessary to prevent data loss in the event of hardware failure, accidental deletion, or other unforeseen circumstances. Therefore, all of the options mentioned - keeping it physically clean, protecting it from malware, and backing up important files - are essential for maintaining a computer.

A Graphics Processing Unit (GPU) is a specialized electronic circuit that is designed to rapidly manipulate and alter memory to accelerate the creation of images in a frame buffer intended for output to a display device. It is responsible for rendering images, animations, and video for the computer's screen. The term "Graphics Processing Unit" accurately describes the function and purpose of this technology, making it the correct answer.

CD-ROM stands for Compact Disk Read Only Memory. It is a type of optical disk storage that can store large amounts of data. The data on a CD-ROM is read-only, meaning it cannot be modified or erased. CD-ROMs are commonly used for distributing software, games, and multimedia content.

A bit is the smallest unit of data in computer processing. It represents a binary digit, which can have a value of either 0 or 1. In computer systems, data is stored and processed in the form of bits, and they are used to represent and manipulate information. Other units of data, such as bytes, megabytes, and gigabytes, are composed of multiple bits. However, a bit itself is the fundamental building block of digital information.

Fedora is not a mobile operating system. It is a popular Linux distribution primarily used for desktop and server systems. Apple iOS, Windows Phone 7, and Google Android are all mobile operating systems designed for smartphones and tablets.

WAN stands for Wide Area Network. A Wide Area Network is a type of computer network that spans a large geographical area, such as multiple cities or even countries. It connects multiple local area networks (LANs) together, allowing for the exchange of data and communication between different locations. Unlike a LAN, which is typically confined to a single building or campus, a WAN is designed to cover a much larger area and is often used by businesses or organizations with multiple branches or offices in different locations.

The correct answer is Mac OS X. This is because Macintosh computers, also known as Macs, are specifically designed and manufactured by Apple Inc. and they exclusively use the Mac OS X operating system. Microsoft Windows is the operating system used by PCs, not Macs. Microsoft Word is a word processing software, not an operating system. Therefore, the correct answer is Mac OS X.

Windows Vista was launched in 2007.

Mobile devices designed mainly for reading e-books are commonly referred to as e-readers. These devices are specifically designed to provide a comfortable reading experience with features such as e-ink displays, adjustable font sizes, and long battery life. They are optimized for reading digital books and often come with additional features like built-in dictionaries and note-taking capabilities.

Booting is the process that occurs when you press the power button to turn your computer on. During booting, the computer's hardware is initialized, the operating system is loaded into the computer's memory, and various system checks and configurations are performed. This allows the computer to start up and be ready for use.

A processor's speed is measured in megahertz (MHz) and gigahertz (GHz). Megahertz is used to measure the speed of older processors, while gigahertz is used to measure the speed of modern processors. Megahertz represents one million cycles per second, while gigahertz represents one billion cycles per second. This measurement indicates how quickly the processor can execute instructions and perform calculations, with higher values indicating faster processing speed.

The question asks for the operating systems for personal computers, and Microsoft Word is not an operating system but a word processing software. Therefore, it is not one of the most common operating systems for personal computers.

LED stands for Light-emitting diodes. LEDs are electronic devices that emit light when an electric current passes through them. They are commonly used in various applications such as lighting, displays, and indicators. LEDs are energy-efficient, long-lasting, and offer a wide range of colors, making them a popular choice in many electronic devices and lighting solutions.

The correct answer is 1947. The ENIAC was indeed the first electronic computer, developed during World War II and completed in 1945. However, it was not fully operational until 1947. The ENIAC was a massive machine, weighing 30 tons and taking up a large room. It was used for calculations related to military research and was a significant advancement in computing technology at the time.

Thunderbolt is the correct answer because it is a newer port that can transmit data at very high speeds, making it ideal for use with high resolution monitors. Thunderbolt technology allows for fast data transfer rates and supports high-definition displays, making it suitable for connecting high-resolution monitors and other peripherals that require high bandwidth.