Binary: Another revision thing I have.

Binary: Another revision thing I have.

1. Binary is a counting system for computers, it is made up of 0 and 1

   • Binary is made up of 8 bits.
     • 128 64 32 16 8 4 2 1
       • These are easy to convert denary to.
       • It can go up 1 more time to 255, before going to 256 with is 9 bit.

2. Computers use binary so that they can store data and make everything on your screen work

3. In binary you can also convert denary numbers

   • For example, 7 is 0111
     • Binary is also used to also add things

4. Another thing people use is Hex. Which is easier to use to convert Denary

   • Hex is made up of 123456789ABCDEF

5. Adding and subtracting Binary.

   • There are some rules, like adding denary, you have to carry if it is not a valid number
     • For example. If it was 1+1, you would have to carry 1 and make it a 0.
   • It's the same with subtracting. If there are two 0 wanting to be subtracted, you have to carry one from another number

6. Converting binary to denary.

   • If the number was 00010100 then you would look at the ones, and add them to the 8 bit number it goes with so the answer would be 20.
   • Converting denary to binary
     • If the denary number was 9, you would have to add it up using the 8 bit system. So the answer would 0000 1001 or to shorten it because there is nothing in the first 4 digits, it can just be 1001