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ITT - Index of

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<strong>ITT</strong>54/74192, <strong>ITT</strong>54/74193<br />

SYNCHRONOUS 4-81T UP-DOWN COUNTER<br />

<strong>ITT</strong>54/74193 BINARY COUNTERS<br />

FUNCTIONAL BLOCK DIAGRAM<br />

'-<br />

J<br />

BORROW<br />

OUTPUT<br />

j<br />

"<br />

CARRY<br />

OUTPUT<br />

DATA<br />

INPUT A<br />

DOWN<br />

COUNT<br />

UP<br />

COUNT<br />

DATA<br />

INPUT B<br />

DATA<br />

INPUT C<br />

DATA<br />

INPUT D<br />

CLEAR<br />

,<br />

,<br />

r-L.I"<br />

D<br />

..r-'\<br />

f1-'<br />

.~<br />

U<br />

--r-"\<br />

rl-/<br />

.~<br />

D<br />

I--t<br />

---<br />

U<br />

Je.<br />

QA<br />

T<br />

OA<br />

fifyR<br />

~<br />

Os<br />

T<br />

Oa<br />

~<br />

~<br />

Oc<br />

T<br />

Dc<br />

:9~r<br />

~~<br />

00<br />

oJ"><br />

OUTPUT QA<br />

OUTPUT 0B<br />

OUTPUTQC<br />

OUTPUT QD<br />

LOAD<br />

T<br />

00<br />

s:J'Y<br />

3-237

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