When eight bytes of data have been collected, they are transmitted to a computer 100km
away. Parity checks are carried out to identify if the data has been transmitted correctly. The
system uses even parity and column 1 is the parity bit.
The eight bytes of data are sent together with a ninth parity byte:
![](https://i0.wp.com/pepabank.com/wp-content/uploads/2023/04/gates2.png?resize=506%2C457&ssl=1)
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