The document discusses the basics of binary code and how it is used in computing. It explains that binary represents information using only 1s and 0s and that a group of 8 bits is called a byte. Common codes like ASCII use binary to represent letters, numbers, and other characters. The document also demonstrates how to convert decimal numbers to binary and discusses units of data storage like kilobytes and megabytes.

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What is the main purpose
of binary?

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The importance of binary
code
 The binary number system is the base of all
computing systems and operations. It enables
devices to store, access and manipulate all
types of information directed to and from the
CPU or memory.

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Digital
Presentation

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 Within a computer, information is represented
and stored in a digital binary. The term bit is
an abbreviation of binary digit and represents
the smallest piece of data.

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 A bit can have only two possible values,
a one digit (1) or a zero digit (0). A bit
can be used to represent the state of
something that has two states.

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 Computer use binary code to represent and
internet letters number and special
characters with bits. A commonly used code
is the American Standard Code for
Information Interchange (ASCII).

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 With ASCII, each character is
represented by a string of bits. For
example:
 Capital letter: A = 01000001
 Number: 9 = 00001001
 Special characters: # = 00100011

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 Each group of eight bits, such as the
representation of letters and numbers, is
known as a byte. Codes can be used to
represent almost any type of information
digitally: computer data, graphics,
photos, voice, video, music.

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Convert Decimal
Numbers to Binary

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 To convert a decimal numbers to binary, all you
have to do is divide the number by 2. Get the
quotient and the remainder. Bring down the
quotient, divide it by 2, and get the quotient and
remainder again. Do it repeatedly until the
quotient results to 0. Copy the remainder from
bottom to top, and that is the binary equivalent.

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Convert the decimal numbers
shown below to binary
 45
 19

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Calculating Data
Storage

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 One kilobyte is a more than one thousand
bytes, specifically 1,024. A megabyte
represents more than a million bytes or
1,048,576. A gigabytes is 1,073,741,825 bytes.
A terabyte is 1,099,511,627,776.

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 In general, when something is represented digitally,
the greater the detail, the greater the number of bits
needed to represent it. A low-resolution picture from a
digital camera will use around 360KB, and a high-
resolution picture could 2 MB or more.

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 Kilobyte, megabyte, gigabytes, and terabytes
are typically used to measure the size or
storage capacity of a device.

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 Once we know the size of a file or folder, it is
possible to determine the number of bytes being
used.

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For example

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Solve the problems indicated
below
 How many 60KB jpg files can be stored on a 2 MB
folder in your hard drive?

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