What is a Computer?

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What is a computer?
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• A computer is a device that stores information
  and processes data. Computers were invented in
  1946 at MIT (Massachusetts Institute of
  Technology) by John Atanasoff and Clifford Berry.

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History of the computer

• The ENIAC was the first digital computer and what
  most people think of as a computer. It was built
  during World War II (1943-1946) to help automate
  the calculations performed by human computers.
  They could achieve much faster and more accurate
  results by performing these calculations on a
  computer.

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Hardware vs. Software

• Hardware includes the physical components of a
  computer such as processors, memory chips, hard
  drives, etc.

• Software is the set of instructions that tell how
  to use the hardware such as web browsers, games,
  and word processors..

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What are the different types of computers?

• Most people associate the term "computer" with a
  personal computer such as a desktop or laptop.
  Computers, on the other hand, come in a variety
  of shapes and sizes and serve a variety of
  functions in our daily lives. When you use an
  ATM, scan groceries at the store, or use a
  calculator, you are using a type of computer.

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Desktop computers

• Desktop computers are used by many people at
  work, home, and school. Desktop computers are
  intended to be placed on a desk and typically
  consist of several components, including the
  computer case, monitor, keyboard, and mouse.

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Laptop computers

• A laptop computer, also known as a laptop, is the
  second type of computer you may be familiar with.
  Laptop computers are battery-powered computers
  that are more portable than desktop computers and
  can be used almost anywhere.

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Tablet computers

• Tablet computers, also known as tablets, are
  handheld computers that are even more portable
  than laptops. Tablets, rather than a keyboard and
  mouse, use a touch-sensitive screen for typing
  and navigation.

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Servers

• A server is a computer that distributes data to
  other computers on a network. for example, you
  are looking at something on the Internet that is
  stored on a server. Local file servers are also
  used by many businesses to store and share files
  internally.

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Other Computer Types

• Many of today's electronics are essentially
  specialized computers, even if we don't always
  recognize them. Here are a few typical examples.

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Smartphones Many cell phones can perform many of
the same functions as computers, such as browsing
the Internet and playing games.
Wearable technology refers to a group of devices,
such as fitness trackers and smartwatches, that
are designed to be worn throughout the day.
Game consoles A game console is a type of
computer that is used to play video games on your
television.
TVs Many TVs now include apps that allow you to
access various types of online content.
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What components are required for a computer to
function?

• All of the above-mentioned components are not
  required for a computer. However, a computer
  cannot function without at least the following
  components.

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