McAllister Webb

You most likely realise that the...

We looked at Number Systems and counting (see It is really a Binary World - How Computers Count) last time. As we found that computers comprise of many models of 0 and 1, the binary system, a fast refresher. 1 is the highest digit possible therefore figures in the computer are located for example 1010 or 10 in decimal. We also found these binary numbers is seen as octal (8) or hexadecimal (16) numbers - in cases like this 1010 becomes 15 octal, or A hex.

You probably realise that the 'standard' PC code is in 8 bit bytes getting the hex program a stage further. It's also possible to know that processors, and Windows application that runs on them, have evolved from 8 bits to 16 bits to 32 bits to 64 bits. Generally this implies the computer could work on 1,2, 4 or 8 bytes simultaneously. If this really is all Gobbledegook don't worry, you do not require it to understand how computers add!

OKAY now to the Q - cringe time! It is a little more complicated than last time, but if you think logically, such as a computer, recognizing they're really foolish, you'll travel through it!

We take some slack here to check out a bit of r you may not have heard of - Boolean Algebra. Yet again it is really simple, but it teaches you how a computer works, and why it's therefore pedantic!

Boolean Algebra is named after George Boole, an Mathematician in the 19th Century. He created the logic system used in electronic computers more than a century before there is some type of computer to make use of it!

In Boolean Algebra, rather than + and - an such like. we use AND and OR to form our logic methods.

For example:-

If x or y occurs x OR y = z means, we get z.

However,

x AND y = z shows that both x and y have to be present to get z.

We could also consider an XOR (special OR). Discover further on our favorite related website by browsing to http://finance.yahoo.com/news/website-reveals-reviews-top-binary-223300756.html.

x XOR y=z means that x or y BUT NOT BOTH must be give get z.

That is it! That is all of the math you'll need to comprehend how a computer counts. Told you it had been simple!

Just how do we utilize this reason in the computer? We constitute only a little electronic signal called a with transistors a