# File sizes

Started by
Toboe
, Jul 03 2006 07:04 PM

###
#1
Posted 03 July 2006 - 07:04 PM

###
#2
Posted 03 July 2006 - 07:55 PM

A short explanation.

Computers operate using the base-2 number system, also known as the binary number system. The word bit is a shortening of the words "Binary digIT." Whereas decimal digits have 10 possible values ranging from 0 to 9, bits have only two possible values: 0 and 1. They are almost always bundled together into 8-bit collections, and these collections are called bytes. Many bytes form Kilobytes, megabytes Gigabytes, Terabytes,and Petabyte. they are:

Kilo = 2^10 = 1,024

Mega = 2^20 = 1,048,576

Giga = 2^30 = 1,073,741,824

Tera = 2^40 = 1,099,511,627,776

Peta = 2^50 = 1,125,899,906,842,624

So a kilobyte is 1024 bytes, Megabyte is 1024 kilobytes, Gigabyte is 1024 Megabytes, Gigabyte is 1024 Megabytes, and so on. Divide each of the above by the number above it to see what i mean.

On jpg pictures most will be in the 25 to 100 megabyte size for use on your computer.These wil average from height/width dimensions of around 200 pixels to 2000 pixels. A simple explanation is a 100 x 100 pixel picture will be sized about 1.38 inches by 1.38 inches. With varibles like the DPI( dots per inch) and JPG compression a 500 x 600( 7 inch by 8.25 inch) pixel picture would be around 50 Megabytes in size.

Theres a lot more to all of this but this is the basics of it.

SRX660

Computers operate using the base-2 number system, also known as the binary number system. The word bit is a shortening of the words "Binary digIT." Whereas decimal digits have 10 possible values ranging from 0 to 9, bits have only two possible values: 0 and 1. They are almost always bundled together into 8-bit collections, and these collections are called bytes. Many bytes form Kilobytes, megabytes Gigabytes, Terabytes,and Petabyte. they are:

Kilo = 2^10 = 1,024

Mega = 2^20 = 1,048,576

Giga = 2^30 = 1,073,741,824

Tera = 2^40 = 1,099,511,627,776

Peta = 2^50 = 1,125,899,906,842,624

So a kilobyte is 1024 bytes, Megabyte is 1024 kilobytes, Gigabyte is 1024 Megabytes, Gigabyte is 1024 Megabytes, and so on. Divide each of the above by the number above it to see what i mean.

On jpg pictures most will be in the 25 to 100 megabyte size for use on your computer.These wil average from height/width dimensions of around 200 pixels to 2000 pixels. A simple explanation is a 100 x 100 pixel picture will be sized about 1.38 inches by 1.38 inches. With varibles like the DPI( dots per inch) and JPG compression a 500 x 600( 7 inch by 8.25 inch) pixel picture would be around 50 Megabytes in size.

Theres a lot more to all of this but this is the basics of it.

SRX660

###
#3
Posted 03 July 2006 - 08:12 PM

Hi Toboe...

I'll see if I can clarify this a "bit" for you...though the money analogy won't really work.

The smallest piece of information is a

Next is the

Next is the

Next is the

Then

Then

Last (at least for this description) is the

Hope this helps...

wannabe1

I see SRX660 has already explained this pretty well while I was dilly dallying my reply...I'll leave my reply as additional info only.

I'll see if I can clarify this a "bit" for you...though the money analogy won't really work.

The smallest piece of information is a

**Bit**and, in your analogy, would represent a penny.Next is the

**Byte**which is normally 8 bits in size...or a dime.Next is the

**Kilobit**(Kilo = 1000) which is 1000 bits...or a dollar (This increment is not really used much).Next is the

**Kilobyte**which is 1024 bits (and here is where the money analogy goes out the window).Then

**Megabyte**(Mega = million), which is 1,048,576 bytes or over 8 million bits.Then

**Gigabyte**(Giga = billion), which is 1,073,741,824 or over 8 billion bits.Last (at least for this description) is the

**Terabyte**(Tera = trillion), which is 1,099,511,627.776 bytes...over 8 trillion bits.Hope this helps...

wannabe1

I see SRX660 has already explained this pretty well while I was dilly dallying my reply...I'll leave my reply as additional info only.

###
#4
Posted 04 July 2006 - 11:21 PM

Thank you so much! You both really helped me alot.

###
#5
Posted 05 July 2006 - 12:51 AM

You are quite welcome.

###
#6
Posted 05 July 2006 - 03:03 AM

By the way i made a mistake on the picture sizes. They are in kilobytes NOT megabytes.

SRX660

SRX660

### Similar Topics

#### 0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users