1. ©G Dear 2010 – Not to be sold/Free to use
Applied Mathematic
(Preliminary General 1)
Digital Downloads
and File Storage
Prefixes
Stage 6 - Year 11
Press Ctrl-A
©G Dear 2010 – Not to be sold/Free to use

2. Prefixes used with Storage & Downloads
Many numbers with computers are too long
to write down.
Kilo = 1,000
Three zeros
= 103
This computer
has 1 kilobyte
of RAM.
Symbol = k
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Slide

3. Prefixes used with Storage & Downloads
Many numbers with computers are too long
to write down.
Mega = 1,000,000
Six zeros
= 106
A mega drive
Symbol = M
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4. Prefixes used with Storage & Downloads
Many numbers with computers are too long
to write down.
Giga = 1,000,000,000
Nine zeros
= 109
1 gigabyte
memory card
Symbol = G
End of
Slide

5. Prefixes used with Storage & Downloads
Many numbers with computers are too long
to write down.
Tera = 1,000,000,000,000
Twelve zeros
= 1012
1.5 terabyte
drive
Symbol = T
End of
Slide

6. Prefixes used with Storage & Downloads
Many numbers with computers are too long
to write down.
Peta = 1,000,000,000,000,000
Fifteen zeros
= 1015
Some users have many drives
to create a petabyte
storage drive.
Symbol = P
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Slide

7. Prefixes used with Storage & Downloads
Unit
Traditionally
bytes
Conventionally
bytes
1 kilobyte
210 = 1,024
1,000
1 megabyte
220 = 1,048,576
1,000,000
1 gigabyte
1,073,741,824
1,000,000,000
1 terabyte
x 1012
1 with 12 zeros
1 petabyte
x 1015
1 with 15 zeros
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Slide