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The weight value of bits in one byte

For example, the position of bits in a byte, see Figure1 (Byte) and it would be advisable that you remember. On the picture you can see a table where the deployed eight bits that have their position in a byte. These bits may be a unit (1) or zero (0). About this position depends on the result. If it is zero then the result is zero if the unit then the result is weight value of this bit. But let `s look at the literature on the Internet about the numbering systems and concentrate on the binary system.
1 Byte = 8 Bits

Figure 1.
The weight value of bits in one byte
In this part of Blog tutorial I will explain only the first three rows of the image (position, power, or an exponent and a weight value). Figure1 shows the weight value of each bit or his position in the byte.

Given that the binary number system base 2, base power (exponent) gives the result of the weight value.

So, you notice that the first bit (looking from right to left, marked in green) number 2 base binary system power to 0 (2^0) and the result is weight value is number 1. Bit at the position number 6 has power of the base number 2 to number 5 (2^5) and the result is a weight value number 32.

You notice that the weight increase or decrease the value to double. Other parts of the image I explain in the following topics this blog. It is desirable that you remember this picture. Power the number 2 on any of the following (0-7), you need to know by heart if you want to master working with subnetting the network. (On Figure1. above, You look at the numbers colored pink and blue in the second and third row).

2^0 = 1
2^1 = 2

2^2 = 4
2^3 = 8

2^4 = 16
2^5 = 32

2^6 = 64
2^7 = 128

Someone will ask, why bits and why does using VLSM and subnetting?

I will try to explain in layman as follows. We are aware that more and more Internet users and therefore an increasing need for IP addresses. Every computer that is connected to the Internet has its own IP address, whether it is fixed or variable, as well as its own MAC address (About MAC address I will not be discussed on this blog). Turned out that the current estimated number of IP addresses (IPv4) will not be sufficient for the future of the Internet and in the future will probably be added IPv6 addresses.
(If you're interested in more surf the Internet).

It consists of multiple networks which are interconnected with specific devices. Each of these networks has been identified an IP address and subnet in that network again have its own IP address, and so on.

You also your connection to the Internet, you get assigned a public IP address provided by your ISP (Internet Service Provider) to be connected to the Internet. Of course if you have a LAN (Local Area Network), all the computers in your network that have a specific IP address, whether you've set a fixed or that the computer gets via DHCP server. But for the IP address (and with them the MAC address) of the computer could not communicate with each other, so you would not be able to share data in the network, or even play on two or more computers. Let's go to the next page tutorials