CertiGuide to A+ (Core Hardware) - Bit

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CertiGuide to A+ (Core Hardware)
9 Chapter 0000: The Start of the PC
9 VI Binary Math

VI Binary Math

Hexadecimal (Base 16)

Bit - Byte

Each on or off is called a bit. Package 8 bits together, and, it is called a byte. Because bytes are easy to work with, you will see packaging such as 8-bit, 16-bit, 32-bit or 64-bit. If you think about how the base 10 number doubled with each move out in the columns, 16-bit is considerably more than 8-bits and 32-bits is a very large base 10 number.

**Table 4: Common Names and Sizes of Binary Numbers**
Value	1 Megabyte	1 Kilobyte	32 Bits	8 Bits	4 Bits
Equal to	1024 Kilobytes	1024 Bytes	4 Bytes	1 Byte	1 Nibble
Units =	1,024,576 Bytes 8,196,608 Bits	8192 Bits 1024 Octets	4 Octets 4 Characters 8 Nibbles	1 Octet 1 Character 2 Nibbles	½ Byte ½ Character

Take a piece of scratch paper and play with the base 2 columns until you are familiar with this concept. When you are done, congratulate yourself. You have just mastered binary math. With this mastered, you can take the hex out of hexadecimal math, seen next.

VI Binary Math

Hexadecimal (Base 16)

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CertiGuide to A+ (Core Hardware) (http://www.CertiGuide.com/aplush/) on CertiGuide.com
Version 1.0 - Version Date: December 6, 2004

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