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Information Technology (IT) is a business sector that deals with computing, including hardware, software, telecommunications and generally anything involved in the transmittal of information or the systems that facilitate communication.
What is Computer Science?
Computer Science is the study of computers and computational systems. Unlike electrical and computer engineers, computer scientists deal mostly with software and software systems; this includes their theory, design, development, and application.
Principal areas of study within Computer Science include artificial intelligence, computer systems and networks, security, database systems, human computer interaction, vision and graphics, numerical analysis, programming languages, software engineering, bioinformatics and theory of computing.
Although knowing how to program is essential to the study of computer science, it is only one element of the field. Computer scientists design and analyze algorithms to solve programs and study the performance of computer hardware and software. The problems that computer scientists encounter range from the abstract– determining what problems can be solved with computers and the complexity of the algorithms that solve them – to the tangible – designing applications that perform well on handheld devices, that are easy to use, and that uphold security measure.
What is PC?
A PC may refer to any of the following:
1. Alternatively, a desktop and single-user computer, PC, is short for personal computer (also computer) and is a term coined by Ed Roberts when he introduced the MITS Altair 8800. PC is often used in the computer industry to describe an IBM or IBM-compatible computer even though the term PC can refer to any personal computer including an Apple Macintosh computer. The picture shows the Dell Precision 390 computer courtesy of Dell Inc. and an example of a desktop PC.
Laptop computers, also known as notebooks, are portable computers that you can take with you and use in different environments. They include a screen, keyboard, and a trackpad or trackball, which serves as the mouse. Because laptops are meant to be used on the go, they have a battery which allows them to operate without being plugged into a power outlet. Laptops also include a power adapter that allows them to use power from an outlet and recharges the battery.
While portable computers used to be significantly slower and less capable than desktop computers, advances in manufacturing technology have enabled laptops to perform nearly as well as their desktop counterparts. In fact, high-end laptops often perform better than low or even mid-range desktop systems. Most laptops also include several I/O ports, such as USB ports, that allow standard keyboards and mice to be used with the laptop. Modern laptops often include a wireless networking adapter as well, allowing users to access the Internet without requiring any wires.
A laptop computer is a small personal computer. They are designed to be more portable than traditional desktop computers, with many of the same abilities. Laptops are able to be folded flat for transportation and have a built-in keyboard and touchpad.
- 1 : capable of moving or being moved : movable a mobile missile launcher a mobile laboratory.
- 2a : changeable in appearance, mood, or purpose mobile face. b : adaptable, versatile an organization mobile enough to be able to cope with any emergency.
- 3 : migratory a mobile society of nomadic herders.
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5 parts of a computer
Whether it’s a gaming system or a home PC, the five main components that make up a typical, present-day computer include:
- A motherboard
- A Central Processing Unit (CPU)
- A Graphics Processing Unit (GPU), also known as a video card
- Random Access Memory (RAM), also known as volatile memory
- Storage: Solid State Drive (SSD) or Hard Disk Drive (HDD)
In terms of construction, each of these main components are attached to the motherboard and then put into a protective case—resembling the clean, polished look most of us are accustomed to seeing.
Sure, most computers have their own distinct design – and different brands of hardware installed – but the components listed above are standard across all computers.
Important: A quick note before we dive into the details—I’m listing and talking about the different components of a computer. This is by no means intended to be an invitation to disassemble your computer, nor is it a set of instructions to do so. Without the proper knowledge, you can severely damage your computer, and importantly, doing so is unsafe.
1. The motherboard
What it is: All components of a computer communicate through a circuit board called the motherboard, as was mentioned above.
What it does: Think of the motherboard as the glue that holds everything else together.
(The Raspberry Pi, like the one featured in our summer course for kids, Build and Code Your Own Take-Home Laptop, is a motherboard.)
The motherboard’s video card and Central Processing Unit are contained in an integrated (built-in) chipset, shown in the picture below:
2. The Central Processing Unit (CPU)
What it is: The CPU is often called the “brain” of a computer, thanks to its direct plug connection to the motherboard, and communication with all of the computer’s other components.
What it does: Whenever you write a line of code (in Python, Java, C++, or any other programming language), it’s broken down into assembly language—which is a language that the processor can understand. It fetches, decodes, and executes these instructions.
And that’s where the CPU comes in—all the processes a computer handles are taken care of by the CPU.
3. The Graphics Processing Unit (GPU)
What it is: It’s not uncommon to hear gamers obsess over the next new graphics card, as these graphic cards make it possible for computers to generate high-end visuals like those found in the many different types of video games.
In addition to video games, though, good graphics cards also come in handy for those who rely on images in order to execute their craft, like 3D modelers using resource-intensive software.
What it does: Graphics cards often communicate directly with the display monitor, meaning a $1,000 graphics card won’t be of much use if there isn’t a high-end monitor connected to it.
4. Random Access Memory (RAM)
What it is: RAM, also known as volatile memory, stores data regarding frequently accessed programs and processes. (It’s called volatile memory because it gets erased every time the computer restarts.)
What it does: RAM helps programs and games start up and close quickly.
What it is: All computers need somewhere to store their data. Modern computers either use a Hard Disk Drive (HDD) or Solid State Drive (SSD).
What it does: HDDs are made of an actual disk onto which data is stored. The disk is read by a mechanical arm. (HDDs are cheaper than SSDs, but are slowly becoming more and more obsolete.)
SSDs (think SIM cards) have no moving parts and are faster than a hard drive, because no time is spent waiting for a mechanical arm to find data on a physical location on the disk.
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Wi-Fi (/ˈwaɪfaɪ/) is a family of wireless network protocols, based on the IEEE 802.11 family of standards, which are commonly used for local area networking of devices and Internet access.
How to turn off
Just click on the wireless icon in the corner, then click the WiFi button. With a click, the wireless connection will turn off and remain that way until it is triggered to reconnect. Make sure that it says manually under “Turn WiFi Back On” to keep it disconnected until you choose to switch it back on.
How can I install Wi-Fi in my PC?
In order to connect a desktop or PC to Wi-Fi, you will need to make sure your desktop has a wireless network adapter. Check for the wireless network adapter by selecting the “Start” button, typing “device manager” in the search box, and selecting “Device Manager” when it appears.
Which WiFi adapter is best for PC?
- Netgear Nighthawk AC1900. Best USB Wi-Fi Adapter. …
- TP-Link Archer T2U Plus. Best Budget USB Wi-Fi Adapter. …
- Asus USB-AC68. Best USB Wi-Fi Adapter For Gaming. …
- D-Link DWA-192. Fastest USB Wi-Fi adapter. …
- TP-Link Archer T4U V3. Good Balance of Power to Price. …
- Net-Dyn AC1200. …
- Netgear A6150 AC1200 WiFi USB Adapter.
What is read in computer?
Reading is an action performed by computers, to acquire data from a source and place it into their volatile memory for processing. Computers may read information from a variety of sources, such as magnetic storage, the Internet, or audio and video input ports. Reading is one of the core functions of a Turing machine.
What is computer and its applications?
An application, or application program, is a software program that runs on your computer. Web browsers, e-mail programs, word processors, games, and utilities are all applications. In contrast, system software consists of programs that run in the background, enabling applications to run.
Basic Applications of Computer
- Home. Computers are used at homes for several purposes like online bill payment, watching movies or shows at home, home tutoring, social media access, playing games, internet access, etc.
- Medical Field.