Binary Numbers
Base 10 and Base 2 We normally work with numbers in base 10. In base 10 we use the digits 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9. Everything inside your computer is stored as binary also called base 2. In base 2 we use only the digits 0 and 1. Everything inside your computer is stored as binary (1s and 0s): Text Pictures Songs etc.
Base 10 Number Example: In base 10 we use a system of place values as shown below:
Binary Numbers To start with, we will be using 2^8 (8 bit) binary numbers. In base 2 we use a system of place values as shown below:
Binary Number Example: The easiest method of converting base 10 numbers into binary numbers is by using a table: =
Binary Questions Convert the following binary numbers to base 10: = = = 102
Converting Binary Convert the following base 10 numbers into binary numbers: 33 11 = = =
Units of Measure A group of 8 bits is called a Byte. Other units of measure include: Nibble - 4 bits (half a byte) Byte - 8 bits Kilobyte (KB) bytes (or 1024 x 8 bits) Megabyte (MB) kilobytes (or bytes) Gigabyte (GB) megabytes Terabyte (TB) gigabytes