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Diffstat (limited to 'semestre 3/architecture des ordinateurs/td/25-11-26.md')
| -rw-r--r-- | semestre 3/architecture des ordinateurs/td/25-11-26.md | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/semestre 3/architecture des ordinateurs/td/25-11-26.md b/semestre 3/architecture des ordinateurs/td/25-11-26.md index e72f90a..47555b1 100644 --- a/semestre 3/architecture des ordinateurs/td/25-11-26.md +++ b/semestre 3/architecture des ordinateurs/td/25-11-26.md @@ -73,6 +73,10 @@ $(\bar a.b.c)+(a.\bar b.\bar c)+(a.b.\bar c)+(a.b.c)$ | 1 | 1 | 0 | 0 | 1 | $s=(\bar u_1.\bar u_2.c_{in})+(\bar u_1.u_2.\bar c_{in})+(u_1.\bar u_2.\bar c_{in})+(u_1.u_2.c_{in})=u_1\oplus u_2\oplus c_{in}$ où $\oplus$ est $\mathrm{xor}$ (à refaire) $c_{out}=(\bar u_1.u_2.c_{in})+(u_1.\bar u_2.c_{in})+(u_1.u_2.c_{in})+(u_1.u_2.\bar c_{in})=a.b+a.c_{in}+b.c_{in}=c_{in}.(a\oplus b)+a.b$ (à refaire) + +$s = (\bar a . \bar b . c)+(\bar a.b.\bar c)+(a.\bar b.\bar c)+(a.b.c)$ +$s = (\bar a . (\bar b + (\bar a.b.\bar c)) . c + (\bar a.b.\bar c))$ + | $i_3$ | $i_2$ | $i_1$ | $i_0$ | $a$ | $b$ | $c$ | $d$ | $e$ | $f$ | $g$ | | ----- | ----- | ----- | ----- | --- | --- | --- | --- | --- | --- | --- | | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | | |