How can we relate to the terms Bits and Bytes What do I mean when I say This computer has a 64bit processor with 4 Gigabytes of RAM and 200 Gigabytes of hard disk space The Bit We all ready know that a computer reads information in ID: 755302
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Slide1
Bits, Bytes, and StorageSlide2
How can we relate to the terms Bits and Bytes?
What do I mean when I say:
“This
computer has a 64-bit processor with 4 Gigabytes of RAM and 200 Gigabytes of hard disk
space.”Slide3
The Bit
We all ready know that a computer reads information in bits; a whole slew of 1’s and 0’s. 1 = on and 0 = offSlide4
Bit
bit =
From a shortening of the words “
b
inary dig
it
”
the basic
unit of information for computers
1 or 0
are the only values (1 = on and 0 = off)Slide5
Key Terms
Bits = 1 or 0Bytes = 8 bits = 1 byteAll of the prefixes related to storage
KB
MB
GB
TBSlide6
Byte
1 Byte = 8 bits
Each keyboard character
is stored as a Byte (
8 bits
)
Example
A = 01000001 Slide7
Diagram of Bits and BytesSlide8
Text to binary conversion
The Montreal Canadians are the best hockey team in the NHL.
0101010001101000011001010010000001001101011011110110111001110100011100100110010101100001011011000010000001000011011000010110111001100001011001000110100101100001011011100111001100100000011000010111001001100101001000000111010001101000011001010010000001100010011001010111001101110100001000000110100001101111011000110110101101100101011110010010000001110100011001010110000101101101001000000110100101101110001000000111010001101000011001010010000001001110010010000100110000101110
http://www.digitalcoding.com/tools/text-to-binary-conversion.html
This sentence contains 56 characters.
That is 56 bytes of information or, 448 bites
(1’s and 0’s) of informationSlide9
How does a computer processor understand bytes?
The processor is made of zillions of Transistors.
Transistor on = 1
Transistor off = 0Slide10
A transistor is a
switch
Switch on = 1
Switch off = 0
The ”A” exists as a pattern in eight transistors, where some are “turned on” (
charged - an electron hit the
transitor
)
and others are not.
Together these 8 transistors make up
one byte
. Slide11
Give this a shot…..
The Binary Math GameSlide12
UNITS
Big & Way Big Bytes
Byte a grouping of eight bits
for instance -
->
0110 0001
Kb
(
kilo
byte) about
1000
bytes
Mb
(
mega
byte) about one thousand KB
or
one million
bytes
Gb
(
giga
byte) about one thousand MB
or
one billion
bytes
Tb
(
tera
byte) is about one thousand GB
or
one trillion
bytesSlide13
Terms for Storage Capacities
These are the numeric values
that represent the previous slide:
1
bit = 0 or 1
(b)
8 bits = 1 byte
(B)
1,000 bytes =
kilobyte (KB)
1,000,000 bytes =
megabyte (MB)
1,000,000,000 bytes =
gigabyte (GB)
1,000,000,000,000
=
terabyte (TB)Slide14
A file with size = 201 BytesSlide15
This hard drive has used up 16,384 bytes or
16 KB
The total amount of GB this computer can hold is 32,254,246,912 bytes or 30 GB of free space.Slide16
MB of data
16 GB
of
data can be stored on memory card
128 MB of Data can
be stored on this memory cardSlide17
Terabytes = a trillion bytesSlide18
Assignment
Use the following website: http://
www.digitalcoding.com/tools/text-to-binary-conversion.html
and create a message. Once you have completed the message do the following:
1) identify how many bytes your message is and;
2) Get a friend in the classroom to decode your binary message, and see if they can figure out how many bytes your message
is.