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| Turning Techie into English Part 2 |
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Electronic Storage In this section I will try to explain the different names for the units of measurement of data. In other words you will have heard of a Megabyte or a Gigabyte but what do they mean and are there any others. Firstly all files held on a computer take up space on the hard disk drive (this is the box inside that stores the computer’s memory). How much space each file takes up is measured in bytes, now as technology has advanced so has the size of the things that we store. It has increased so much that counting in bytes is no longer feasible so the industry has moved on to working in multiples of 1000 it is exactly the same principle as the metre to the kilometre.
So we start with the humble byte.
1000 bytes = 1 kilobyte (KB) 1000 kilobytes = 1 megabyte (MB) 1000 megabytes= 1 gigabyte (GB) 1000 gigabytes = 1 terabyte (TB) 1000 terabytes = 1 petabyte (PB) 1000 petabytes = 1 exabyte (EB) 1000 exabytes = 1 zettabytes (ZB) 1000 zettabytes = 1 yottabyte (YB)
Odd facts • The early personal computers had a typical hard drive of 20 megabytes in size. Today’s computers come with a standard 100+ gigabyte hard drive. • Steve Jobs and Steve Wozniak were the original builders of the first apple personal computers. They used spare parts from their employers to build the machines and when they first proposed the plan to build personal computers they were told that there would never be a market for them. • The computer mouse was at first made of wood when developed by Xerox in Palo Alto, California. • Your mobile phone has more processing power than all the computers in the Apollo space craft that successfully landed 2 men on the moon. • Typewriter is the longest word that can be written using only the letters of the top line of your keyboard. • When the cd was invented, it was decided that a cd should be long enough to hold Beethoven’s Ninth Symphony at any tempo which was precisely 72 minutes in length. • The average computer user blinks 7 times a minute, less than half the normal rate of 20. |
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