Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
Review of Basics of Digital Electronics 1 Lecture 3
CSE 211, Computer Organization and Architecture , CSE/IT
Overview
Int...
Review of Basics of Digital Electronics 2 Lecture 3
CSE 211, Computer Organization and Architecture , CSE/IT
Multiplexer/D...
Review of Basics of Digital Electronics 3 Lecture 3
CSE 211, Computer Organization and Architecture , CSE/IT
Decoder/Encod...
Review of Basics of Digital Electronics 4 Lecture 3
CSE 211, Computer Organization and Architecture , CSE/IT
Decoder/Encod...
Review of Basics of Digital Electronics 5 Lecture 3
CSE 211, Computer Organization and Architecture , CSE/IT
Decoder Expan...
Upcoming SlideShare
Loading in …5
×

Lecture 3

Related Books

Free with a 30 day trial from Scribd

See all

Related Audiobooks

Free with a 30 day trial from Scribd

See all
  • Be the first to comment

Lecture 3

  1. 1. Review of Basics of Digital Electronics 1 Lecture 3 CSE 211, Computer Organization and Architecture , CSE/IT Overview Introduction Logic Gates Flip Flops Registers Counters Multiplexer/ Demultiplexer Decoder/ Encoder
  2. 2. Review of Basics of Digital Electronics 2 Lecture 3 CSE 211, Computer Organization and Architecture , CSE/IT Multiplexer/Demultiplexer 4-to-1 Multiplexer I0 I1 I2 I3 S0 S1 Y 0 0 I0 0 1 I1 1 0 I2 1 1 I3 Select Output S1 S0 Y Combinational circuit that receives binary information from one of 2n input data lines and directs it to a single input line Also called data selector De-multiplexer works in opposite manner, accepts single input line and produces 2n output lines
  3. 3. Review of Basics of Digital Electronics 3 Lecture 3 CSE 211, Computer Organization and Architecture , CSE/IT Decoder/Encoder Combinational circuit that converts binary information from the n coded inputs to a maximum of 2n unique outputs A decoder with n inputs and m outputs is referred to as n X m decoder, where m<= 2n Decoder is enabled when E=1 Encoders works in opposite manner, accepts 2n input lines and produces n outputs 0 0 0 0 1 1 1 0 0 1 1 0 1 1 0 1 0 1 1 0 1 0 1 1 1 1 1 0 1 d d 1 1 1 1 E A1 A0 D0 D1 D2 D3 2-to-4 Decoder A0 A1 E D0 D1 D2 D3
  4. 4. Review of Basics of Digital Electronics 4 Lecture 3 CSE 211, Computer Organization and Architecture , CSE/IT Decoder/Encoder 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 1 0 0 0 0 1 1 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 1 0 1 0 1 0 0 0 0 0 0 1 1 0 1 0 0 0 0 0 0 0 1 1 1 D7 D6 D5 D4 D3 D2 D1 D0 A2 A1 A0 Octal to Binary Encoder D1 D2 D3 D5 D6 D7 D4 A0 A1 A2 A0 = D1 + D3 + D5 + D7 A1 = D2 + D3 + D6 + D7 A2 = D4 + D5 + D6 + D7
  5. 5. Review of Basics of Digital Electronics 5 Lecture 3 CSE 211, Computer Organization and Architecture , CSE/IT Decoder Expansion

×