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<ul><li>NAME  IBRAR KHAN </li></ul><ul><li>SUBJECT  DLD </li></ul><ul><li>2 nd  SEMESTER MCS TEACHER  </li></ul><ul><li>IS...
WHAT IS ENCODER? DECODER? MULTIPLEXER?
DECODER <ul><li>A decoder is a combinational circuit that converts binary information form n put lines to a maximum of 2n ...
D 0=x`y`z` D 1=x`y`z D 2=x`y z` D 3=x`y z D 4=x y` z` D 7=x y z D 6=x y z`  D 5=x y` z z y D 0 x inverter x  y  z  xyz 1  ...
<ul><li>The  three input x y z are decoded into eight output. Each output representing one of the minterms. Of the 3 input...
Encoder <ul><li>An Encoder is a digital function that produce a reverse operation from that of a Decoder. </li></ul><ul><l...
D 0 D 1 D 2 D 3 D 4 D 5 D 6 D 7 X=D4+D5+D6+D7 y=D2+D3+D6+D7 z=D1+D3+D5+D7 Octal to binary encoder x  y  z  x+y+z o  o  o  ...
Truth table of octal to binary encoder input  output D0  D1  D2  D3  D4  D5  D6  D7  X  Y  Z 0  0  0 0  0  1 0  1  0 0  1 ...
Multiplexers  <ul><li>Multiplexing mean transmitting a large number of information unite over a smaller number of channel ...
S1  S0  y <ul><li>0  0 </li></ul><ul><li>0  1 </li></ul><ul><li>0 </li></ul><ul><li>1  1  </li></ul>i0 i1  i2 i3 S1 s0  i0...
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Decodder presentation by ibrar

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Decoder presentation by ibrar khan UNIVERSITY OF ABASYAN PESHAWAR

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Decodder presentation by ibrar

  1. 1. <ul><li>NAME IBRAR KHAN </li></ul><ul><li>SUBJECT DLD </li></ul><ul><li>2 nd SEMESTER MCS TEACHER </li></ul><ul><li>ISRAR AHMAD </li></ul>
  2. 2. WHAT IS ENCODER? DECODER? MULTIPLEXER?
  3. 3. DECODER <ul><li>A decoder is a combinational circuit that converts binary information form n put lines to a maximum of 2n outlines </li></ul><ul><li>The three input variable may represent a binary number and the output will represent the eight digits in the octal number system . Input n=output 2N </li></ul>
  4. 4. D 0=x`y`z` D 1=x`y`z D 2=x`y z` D 3=x`y z D 4=x y` z` D 7=x y z D 6=x y z` D 5=x y` z z y D 0 x inverter x y z xyz 1 1 1 1 AND 3-to-8 line decoder circuit
  5. 5. <ul><li>The three input x y z are decoded into eight output. Each output representing one of the minterms. Of the 3 input variables. </li></ul>Truth table 3 to 8 line decoder x y z D0 D1 D2 D3 D4 D5 D6 D7 outputs inputs 0 0 0 0 0 1 0 1 0 0 1 1 1 0 0 1 0 1 1 1 0 1 1 1 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 1
  6. 6. Encoder <ul><li>An Encoder is a digital function that produce a reverse operation from that of a Decoder. </li></ul><ul><li>An encoder 2n input line and n output line. </li></ul><ul><li>Example </li></ul><ul><li>when we enter a word or hexadecimal number in the keyboard ,behind the keyboard a circuit works which convert the word or hexadecimal to binary. </li></ul>
  7. 7. D 0 D 1 D 2 D 3 D 4 D 5 D 6 D 7 X=D4+D5+D6+D7 y=D2+D3+D6+D7 z=D1+D3+D5+D7 Octal to binary encoder x y z x+y+z o o o 0 1 0 0 1 OR
  8. 8. Truth table of octal to binary encoder input output D0 D1 D2 D3 D4 D5 D6 D7 X Y Z 0 0 0 0 0 1 0 1 0 0 1 1 1 0 0 1 0 1 1 1 0 1 1 1 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1
  9. 9. Multiplexers <ul><li>Multiplexing mean transmitting a large number of information unite over a smaller number of channel or lines. </li></ul><ul><li>A digital multiplexer is a combinational circuit that selects binary information from one of many inpt line and directed it to a single output . </li></ul>
  10. 10. S1 S0 y <ul><li>0 0 </li></ul><ul><li>0 1 </li></ul><ul><li>0 </li></ul><ul><li>1 1 </li></ul>i0 i1 i2 i3 S1 s0 i0 i3 i2 i1 y A 4 to 1 line multiplexer <ul><li>x y x y </li></ul><ul><li>0 0 0 </li></ul><ul><li>0 1 0 </li></ul><ul><li>0 0 </li></ul><ul><li>1 1 1 </li></ul>AND
  11. 11. THE END

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