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World of Computers

Purpose

We will study what computers are so I can identify different types of computers to better know how they affect my daily life by completing a series of interactivities.

Vocabulary

manipulates (verb)
to control or influence (a person or situation) cleverly, unfairly, or unscrupulously.
Example Sentence: The politician manipulated the media to gain public support.

essential (adjective)
absolutely necessary; extremely important.
Example Sentence: Water is essential for survival.

revolutionized (verb)
to completely change or transform (something) in a positive way.
Example Sentence: The invention of the internet revolutionized communication.

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What is a computer?

A computer is an electronic device that manipulates information, or data. It has the ability to store, retrieve, and process data. You may already know that you can use a computer to type documents, send email, play games, and browse the Web. You can also use it to edit or create spreadsheets, presentations, and even videos.

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Watch the video below to learn about different types of computers.
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Hardware vs. Software

Before we talk about different types of computers, let’s talk about two things all computers have in common: hardware and software.

Hardware is any part of your computer that has a physical structure, such as the keyboard or mouse. It also includes all of the computer’s internal parts, which you can see in the image 

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What are the different types of computers?

When most people hear the word computer, they think of a personal computer such as a desktop or laptop. However, computers come in many shapes and sizes, and they perform many different functions in our daily lives. When you withdraw cash from an ATM, scan groceries at the store, or use a calculator, you’re using a type of computer.

viewing a variety of computers

 

Desktop computers

showing a desktop computer

Many people use desktop computers at work, home, and school. Desktop computers are designed to be placed on a desk, and they’re typically made up of a few different parts, including the computer case, monitor, keyboard, and mouse.

 

Laptop computers

showing a laptop computer

The second type of computer you may be familiar with is a laptop computer, commonly called a laptop. Laptops are battery-powered computers that are more portable than desktops, allowing you to use them almost anywhere.

 

Tablet computers

showing a tablet computer

Tablet computers—or tablets—are handheld computers that are even more portable than laptops. Instead of a keyboard and mouse, tablets use a touch-sensitive screen for typing and navigation. The iPad is an example of a tablet.

 

Servers

showing servers

A server is a computer that serves up information to other computers on a network. For example, whenever you use the Internet, you’re looking at something that’s stored on a server. Many businesses also use local file servers to store and share files internally.

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Other types of computers

Many of today’s electronics are basically specialized computers, though we don’t always think of them that way. Here are a few common examples.

 

Smartphones

Many cell phones can do a lot of things computers can do, including browsing the Internet and playing games. They are often called smartphones.

 

Wearables

Wearable technology is a general term for a group of devices—including fitness trackers and smartwatches—that are designed to be worn throughout the day. These devices are often called wearables for short.

 

Game consoles

A game console is a specialized type of computer that is used for playing video games on your TV.

 

TVs

Many TVs now include applications—or apps—that let you access various types of online content. For example, you can stream video from the Internet directly onto your TV.

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PCs and Macs

Personal computers come in two main styles: PC and Mac. Both are fully functional, but they have a different look and feel, and many people prefer one or the other.

 

PCs

showing a pc

This type of computer began with the original IBM PC that was introduced in 1981. Other companies began creating similar computers, which were called IBM PC Compatible (often shortened to PC). Today, this is the most common type of personal computer, and it typically includes the Microsoft Windows operating system.

 

Macs

showing a mac

The Macintosh computer was introduced in 1984, and it was the first widely sold personal computer with a graphical user interface, or GUI (pronounced gooey). All Macs are made by one company (Apple), and they almost always use the Mac OS X operating system.

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Check Your Knowledge

Activity directions – Consider what you have studied and respond to the following inquiries.

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What is a laptop computer?

A laptop is a personal computer that can be easily moved and used in a variety of locations. Most laptops are designed to have all of the functionality of a desktop computer, which means they can generally run the same software and open the same types of files. However, laptops also tend to be more expensive than comparable desktop computers.

Watch the video below to learn about laptop computers.

 

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How is a laptop different from a desktop?

Because laptops are designed for portability, there are some important differences between them and desktop computers. A laptop has an all-in-one design, with a built-in monitor, keyboard, touchpad (which replaces the mouse), and speakers. This means it is fully functional, even when no peripherals are connected. A laptop is also quicker to set up, and there are fewer cables to get in the way.

You’ll also have to the option to connect a regular mouse, larger monitor, and other peripherals. This basically turns your laptop into a desktop computer, with one main difference: You can easily disconnect the peripherals and take the laptop with you wherever you go.

Here are the main differences you can expect with a laptop.

Touchpad: A touchpad—also called a trackpad—is a touch-sensitive pad that lets you control the pointer by making a drawing motion with your finger.

a laptop touchpad

 

Battery: Every laptop has a battery, which allows you to use the laptop when it’s not plugged in. Whenever you plug in the laptop, the battery recharges. Another benefit of having a battery is that it can provide backup power to the laptop if the power goes out.

 

AC adapter: A laptop usually has a specialized power cable called an AC adapter, which is designed to be used with that specific type of laptop.

 

laptop AC adapter

 

Ports: Most laptops have the same types of ports found on desktop computers (such as USB), although they usually have fewer ports to save space. However, some ports may be different, and you may need an adapter in order to use them.

 

Price: Generally speaking, laptops tend to be more expensive than a desktop computer with the same internal components. While you may find that some basic laptops cost less than desktop computers, these are usually much less powerful machines.

 

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Check Your Knowledge

Activity directions – Consider what you have studied and respond to the following inquiries.

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What is a mobile device?

A mobile device is a general term for any type of handheld computer. These devices are designed to be extremely portable, and they can often fit in your hand. Some mobile devices—like tablets, e-readers, and smartphones—are powerful enough to do many of the same things you can do with a desktop or laptop computer.

 

Tablet computers

Like laptops, tablet computers are designed to be portable. However, they provide a different computing experience. The most obvious difference is that tablet computers don’t have keyboards or touchpads. Instead, the entire screen is touch-sensitive, allowing you to type on a virtual keyboard and use your finger as a mouse pointer.

Tablet computer

Tablet computers can’t necessarily do everything traditional computers can do. For many people, a traditional computer like a desktop or laptop is still needed in order to use some programs. However, the convenience of a tablet computer means it may be ideal as a second computer.

 

E-readers

E-book readers—also called e-readers—are similar to tablet computers, except they are mainly designed for reading e-books (digital, downloadable books). Notable examples include the Amazon Kindle, Barnes & Noble Nook, and Kobo. Most e-readers use an e-ink display, which is easier to read than a traditional computer display. You can even read in bright sunlight, just like if you were reading a regular book.

a Kindle e-reader

You don’t need an e-reader to read e-books. They can also be read on tablets, smartphones, laptops, and desktops.

 

Smartphones

A smartphone is a more powerful version of a traditional cell phone. In addition to the same basic features—phone calls, voicemail, text messaging—smartphones can connect to the Internet over Wi-Fi or a cellular network (which requires purchasing a monthly data plan). This means you can use a smartphone for the same things you would normally do on a computer, such as checking your email, browsing the Web, or shopping online.

smartphone

Most smartphones use a touch-sensitive screen, meaning there isn’t a physical keyboard on the device. Instead, you’ll type on a virtual keyboard and use your fingers to interact with the display. Other standard features include a high-quality digital camera and the ability to play digital music and video files. For many people, a smartphone can actually replace electronics like an old laptop, digital music player, and digital camera in the same device

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Check Your Knowledge

Activity directions – Consider what you have studied and respond to the following inquiries.

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