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The Basics of computing.   Numbers, it is always about numbers.

Binary (2) = 0 and 1

Octal (8) = 0, 1, 2, 3, 4, 5, 6, 7

Decimal (10) = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

Hex = (16) 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F

Computers utilize Binary at the machine level. (Think light bulb off or on.) The only significance of a computer is that it can process, place and retrieve those 'zeros' and 'ones' at a very high speed.

Computing - 8bit register Stores 0s and 1s (Binary) and those bits represent a decimal number.

Bit 1 (1)

Bit 2  (2)

Bit 3  (4)

Bit 4  (8)

Bit 5  (16)

Bit 6   (32)

Bit 7   (64)

Bit 8   (128)

A 1 bit in the computer's register Bit 8 location (consider a row of 8 light bulbs, either off or on ) is equal to decimal 128, and if you put a 1 bit in each of the other seven bit locations, they sum to 127. Of course we must count an all zero situation, too.  128 + 127 + 0 = 256 possibilities (conditions) from this one 8 bit register.

With 256 possible conditions of this one 8 bit register (storage area), we can assign characters to each of these conditions. Decimal numbers zero through nine, the 26 characters of our alphabet, and special characters like the @ sign. Thus the American Standard Code for Information Interchange (Character-encoding scheme). Remember, with computing a zero counts, in other words remember that zero is a condition that can represent something; and thus it is like zero to nine, NOT 1 to 10.

https://en.wikipedia.org/wiki/ASCII http://www.asciitable.com/ http://ascii.cl/

http://text-symbols.com/ascii/ http://ascii-code.com/

Using a machine (a processor) that counts using the binary system, we can manipulate binary numbers that represent decimal numbers and alphabet characters.

To tell the machine what to do with the numbers inserted into it's memory a series of instructions, a program, will be presented to the machine to tell it what to do with said numbers. Programs can be written in many different languages, and we are not talking about English or French. There are many software programming languages, which provide a human understandable interface to building a series of commands that a computer will understand at it's level -Binary.