Ch.8 Code Converters, Muupees& eu peesltiplexers...

Ch.8 Code Converters, Multiplexers & Demultiplexersu p e e s & e u p e e s

Obj tiObjectivesShould able to:d a

of a binary comparator and a controlled inverter inverter.

Ch.8 Code Converters, Multiplexers & Demultiplexers 2

O tliOutline

1. Comparators2 Decoding2. Decoding3. Encoding4 Code Converters4. Code Converters5. Multiplexers6 De multiplexers 6. De-multiplexers 7. System Design Applications


8 1 C t8.1 Comparators


8 2 D di8.2 Decoding1 Process of 1. Process of

converting some code (such as code (such as binary, BCD or hex) into a aSINGULAR ACTIVE OUTPUT representing its numeric value


D d ’ ICDecoder’s IC

74138 1 of 8 octal decoder ( 3 to 8 line)7442 1 of 10 BCD decoder (4 to 10 line)74154 1 of 16 hex decoder (4 to 16 line)7447 BCD to 7 segment decoder


8 3 E di8.3 Encoding

1. Opposite process from decoding


8 4 C d C t8.4 Code Converters

1. BCD to binary conversion2. BCD to 7 segment conversion3. Gray Codey


BCD to binary conversionBCD to binary conversion


BCD t 7 t iBCD to 7 segment conversion


G C dGray Code


8 5 M lti l8.5 Multiplexers

1. A device capable of funneling several data lines into a single line for transmission to ganother point


8 6 D lti l8.6 Demultiplexers

1. Data distributor


74139 Dual74139 Dual Decoder/Demultiplexer


8.7 System Design 8.7 System Design Applications

1. Microprocessor Address decodingl f ll2. Alarm Encoder for a Microcontroller


Q iQuiz

Buat rangkaian yang bekerja sbg multiplexer 2 bit2 bitBuat 2 to 4 line decoder active highBuat demultiplexer dari dekoder 74138


Ch.8 Code Converters, Muupees& eu peesltiplexers...

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