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Diagrams for signed binary

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Thomas Bishop 2022-12-03 15:47:27 +00:00
parent 4e8052dd42
commit 03b3135401
1 changed files with 3 additions and 5 deletions
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8
Hardware/Binary/Signed_and_unsigned_numbers.md
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@ -19,11 +19,11 @@ For example the two's complement of $0101$ (binary 5) is $1011$. There is a simp
1. Take the unsigned number, and flip the bits. In other words: invert the values, so $0$ becomes $1$ and $1$ becomes $0$.
2. Add one
// INSERT DIAGRAM HERE
![](/img/unsigned-to-signed.png)
To translate a signed number to an unsigned number you flip them back and still add one:
// INSERT DIAGRAM HERE
![](/img/signed-to-unsigned.png)
### Advantages
@ -64,11 +64,9 @@ A simple way to work out the value of a signed number as contrasted with an unsi
Thus for a 4-bit number:
// INSERT PLACE VALUE DIAGRAM HERE
Then if we add the decimal equivalents of the place value together, we get our signed number. So in the case of $-3$:
// INSERT DIAGRAM HERE
![](/img/signed-conversion.png)
## Considerations