Hexdecimal Goes From 1-9 as Denary then From Then To A-F From 10-15 in Denery
To Convert Denery To Hexidecimal
- First Convert to Binary
- Then Chunk into Groups of four
- Convert those Binary chunks to Denery
- Then Use the above numbering System to work out hexidecimal
To Convert Hexidecimal to Deneray Follow the Process in reverse
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This is how negitive numbers are represented in Two's a Complment
11111101 = -3
11111110 = -2
11111111 = -1
00000000 = 0
00000001 = 1
Conveting a Negitive number to Binary
- Find the binary equivlent of the positive decimal number
- Change all the 0's to 1's and the 1's to 0's
- Add 1 To the result
The alternitive is to
- Find the binary equivlent of the positive decimal number
- Starting from right, leave all the didgits alone up to and includin the first 1
- Change all the other didgits from 0 to 1 or from 1 to 0
The eaisiest way to convert back is write out the binary headings above the 0's and ones as you do normally but leave the left most bit negitive and add up and work out the number eg
-128 64 32 16 8 4 2 1 1 0 0 0 1 1 1 0
-128 + 8 4 2 -------- -114
Binary Subtraction ......
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