Bytes and Gigabytes?

Question

Please help me:-
for her homework my daughter has been given some maths to work out. I think that the information on the sheet is wrong. Can anyone confirm this and correct were nessasary:-

1 Gigabyte = 1000 megabytes
1 megabyte = 1000 kilobytes
1 kilobyte = 1000 bytes.

I do not belive that this information is very accurate. If it is wrong my meeting at the school will be very interesting on thursday.

Answer 1

Megabytes – Gigabytes – Terabyte – Units of Digital Measurement

What is a byte, and what are the other units of measure for digital information?
A byte is a unit of measure for digital information. A single byte contains eight consecutive bits, and is capable of storing a single ASCII character, like "h".
A kilobyte (KB) is 1,024 bytes, not one thousand bytes as might be expected. This odd number results from the fact that computers use binary (base two) math, instead of a decimal (base ten) system.
Computer storage and memory is often measured in megabytes (MB). A medium-sized novel contains about 1MB of information. 1MB is 1,024 kilobytes, or 1,048,576 (1024x1024) bytes, not one million bytes. Again, this number results from the fact that computers use binary math.
1 kilobyte (KB) is 1,024 bytes
1 MB is 1,024 kilobytes
1 gigabyte (GB) is 1,024MB, or 1,073,741,824 (1024x1024x1024) bytes.
1 terabyte (TB) is 1,024GB; 1TB is about the same amount of information as all of the books in a large library, or roughly 1,610 CDs worth of data.
1 petabyte (PB) is 1,024TB. Indiana University is now building storage systems capable of holding petabytes of data.
1 exabyte (EB) is 1,024PB.
1 zettabyte (ZB) is 1,024EB.
1 yottabyte (YB) 1,024ZB.

Answer 2

1024 Bits=1 Byte
1024 Bytes=1 Kilobyte
1024 Kilobytes=1 Megabyte
1024 Megabytes=1 Gigabyte
1024 Gigabytes=1 Terrabyte

Answer 3

1 Gigabyte = 1024 Megabytes
1 Megabyte = 1024 Kilobytes
1 Kilobyte = 1024 Bytes.

Answer 4

I'm afraid these are incorrect.

1 Kilobyte = 1024 bytes
1 megabyte = 1024 kilobytes
1 gigabyte = 1024 megabytes
1 byte = 8 bits

Answer 5

You're quite right. There is actually 1024 bytes in a kilobyte. No big deal in the earlier days of computing but when we are dealing with gigabytes, that error is multiplied a million-fold.

There are, however, 1000 kilobytes in a megabyte and 1000 megabytes in a gigabyte.

Answer 6

Computer electronic memory bytes are accessed via a binary address. That is powers of 2, like 2^10 = 1024 and 2^20 = 1048576 (1024 x 1024).

On computer hard disk storage devices, the quoted capacity is in decimal, like 1 MB = 1000 KB.

Conclusion - no single answer is valid.

Answer 7

It's the last line that is wrong. 1 kilobyte = 1024 bytes

Answer 8

1 Kilobyte = 1024 Bytes
1 Megabyte = 1048576 Bytes
1 Gigabyte = 1073741824 Bytes

THESE ARE CORRECT! GO HERE TO VERIFY!

http://computer.howstuffworks.com/bytes3.htm

OR HERE!

http://www.whatsabyte.com/P1/byteconverter.htm

Answer 9

Thats almost right

1 kilobyte (KB) is 1024 bytes

1 megabyte is 1024 kilobytes

1 gigabyte is 1024 megabytes

1 terabyte is 1024 gigabytes.


The information isnt very acurate. Tell them off.

Answer 10

Yes and no. The use of the prefix K (capital K as opposed to small k) to mean 1024 instead of 1000 is a common industry practice, but with no formal published standard. In fact, the IEC has published the "standard" prefixes kibi-, mebi-, gibi- instead of kilo-, mega-, giga- for these multipliers based on powers of two (the bi in these names stands for binary.)

To illustrate the confusion, hard disk drive manufacturers often quote disk capacities using the powers of ten, and this practice makes the capacity sound larger than it is. For example 80 gigabytes is actually 80,000,000,000 bytes which is only 74.5 gibibytes. A gibibyte is what the ordinary computer user in the street thinks a gigabyte is.

So, I wouldn't go to the school and accuse them of being inaccurate. But you can point out to them that there are two common practices and ask them which one they are using.