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Unformatted text preview: Therefore, we set the parity bit
to 1 so that the grouped outputs and parity bit (0,1,0,1) contain an even number of 1s.
Odd parity is generated similarly, except that we always want to have an odd number of
1s. Now that we have the parity bits for each set of inputs, we simply decide whether we
want to use an even or odd parity function and implement the function in circuit form
using a K-map.
The appropriate functions are:
Even parity = a + bc
Odd parity = a’c’ + a’b’
What we do with the output of the parity function depends on whether we use even or
If we’re using even parity, we feed the outputs f1, f2 and f3 into an XOR gate, then use
both the output of that gate and the output of the parity function to a sec...
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This document was uploaded on 02/26/2014 for the course ECE 490SIC at Drexel.
- Fall '08