Multiplexer 141201162448 Conversion Gate01
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Transcript of Multiplexer 141201162448 Conversion Gate01
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Multiplexer / De-
multiplexer
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Multiplexer / De-multiplexer
3
This presentation will demonstrateThe basic function of the Multiplexer (MUX).
The typical application of a MUX.
!-to-" MUX desi#ned with $mall $cale %nte#ration
($$%).
!-to-"& '-to-"& "-to-" Medium $cale %nte#ration(M$%) MUX.
The basic function of the Demultiplexer (D*MUX).
The typical application of a D*MUX.
"-to-! D*MUX desi#n with $mall $cale %nte#ration($$%).
"-to-!& "-to-'& "-to-" Medium $cale %nte#ration(M$%) D*MUX.
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,hat is a Multiplexer (MUX)?
MUX is a di#ital switchthat has multiple inputs(sources) and a sin#leoutput (destination).
The select lines determinewhich input is connectedto the output.
MUX Types-to-" (" select line)
!-to-" ( select lines)
'-to-" (3 select lines)
"-to-" (! select lines)
!
Multiplexer.loc Dia#ram
$elect0ines
%nputs(sources)
1utput(destination)
12N
N
MUX
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Typical pplication of a MUX
2
M3 layerDocin# $tation
0aptop$ound 4ard
Di#ital$atellite
Di#ital4able T5
$urround $ound $ystem
MUX
D0
D1
D2
D3
Y
. $elected$ource
0 0 M3
0 1 0aptop
1 0 $atellite
1 1 4able T5
Multiple $ources $in#leDestination
$elector
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4-to-" Multiplexer (MUX)
. 6
0 0 D7
0 1 D"
1 0 D
1 1 D3
MUX
D7
D"
D
D3
6
.
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4-to-" Multiplexer,a8eforms
+
D7
D"
D
D3
.
%nputData
$elect0ine
1utputData
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Medium $cale %nte#rationMUX
'
8-to-" MUX 16-to-" MUX
%nputs
$elect
*nable
1utput (6))and in8erted
output(
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Handout(")
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,hat is a De-multiplexer(D*MUX)?
D*MUX is a di#italswitch with a sin#le input(source) and a multipleoutputs (destinations).
The select linesdetermine which outputthe input is connected to.
D*MUX Types"-to- (" select line)
"-to-! ( select lines)
"-to-' (3 select lines)
"-to-" (! select lines)
"7
Demultiplexer.loc Dia#ram
$elect0ines
%nput(source)
1utputs(destinations)
2N1
N
D*MUX
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Typical pplication of a D*MUX
""
$in#le $ource MultipleDestinations
$elector
D0
D1
D2
D3
X
D*MUX
. $elected
Destination
0 0 ./, 0aser rinter
0 1 9ax Machine
1 0 4olor %n:et rinter
1 1 en lotter
./, 0aserrinter
4olor %n:etrinter
enlotter
9axMachine
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1-to-! De-Multiplexer (D*MUX)
"
. D7
D"
D
D3
0 0 X 0 0 0
0 1 0 X 0 0
1 0 0 0 X 0
1 1 0 0 0 X
D7
D"
D
D3
X
.
D*MUX
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1-to-! De-Multiplexer,a8eforms
"3
X
$7
$"
D7
D"
D
1utputData
$elect0ine
%nputData
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Medium $cale %nte#rationD*MUX
"!
1-to-! D*MUX 1-to-' D*MUX 16-to-" MUX
$elect
%nput )in8erted(
1utputs)in8erted(
;ote < Most Medium $cale %nte#rated (M$%) D*MUXs &lie the three shown& ha8e outputs that are in8erted=
This is done because it re>uires few lo#ic #ates to
implement D*MUXs with in8erted outputs rather thanno-in8erted outputs.
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$eein# %s ;1T lways.elie8in#
1ur li8es are ?lled withelectronic si#ns thatdisplay the time&temperature& or ball #ame
score= @owe8er& what wesee is not always what isreally happenin#.
%n fact for most displays&the indi8idual displayse#ments are cycledthrou#h so that only onedisplay is on at any #i8entime.
The cycle speed is so fast"2
di#icam-tech=com
br#precision=com
electronic-scoreboard=com
nu-mediadisplays=com/si#ns/time-
displays=php
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$imple Messa#e< ll $e#ments1n
"
The circuit to the ri#htuses four +-se#mentdisplays to display theword 4%1= %n this circuitall displays are
continuously illuminated&each displayin# one letterin the word.
Thou#h this methodwors& it is a 5*A6
ineBcient use of power=To illuminate the simplemessa#e 4%1 in thisway& "' se#ments mustbe continuously on.
4an you thin of anotherwa to dis la this
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Handout()
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Multiplexed Displays$e#ments
%n this circuit the displayse#ments are multiplexed&meanin# that only one display ison at a time.
To display the entire word& thedisplays must be de-multiplexedusin# a "-to-! D*MUX.
%n this example the select linesthat control the D*MUX are
connected to two switches= 6oumust to##le 77& 7"& "7& "" to"'
Manual $elector MultiplexedDisplays
Demultiplexer
);ot ractical(
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0etCs $ee @ow %t ,ors
"
4lic $chematic to lay 5ideo
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4omplete Desi#n
7
This is a ripple counter(remember the dice
#ame).,e will learn how to
desi#n a ripple counter
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