EE101Lecture10

EE101Lecture10 - Mark Redekopp, All rights reserved...

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Unformatted text preview: Mark Redekopp, All rights reserved Introduction to Digital Logic Lecture 10: Implementing Logic Functions w/ Memories Decoders Mark Redekopp, All rights reserved Logic Function Synthesis Given a function description as a T.T. or canonical form, how can we arrive at a circuit implementation or equation (i.e. perform logic synthesis)? 5 methods to be discussed Canonical sum/product + Simplification w/ theorems Karnaugh Maps Decoders + 1 gate per output Multiplexers Memories (used as Look-Up-Tables [LUTs]) Mark Redekopp, All rights reserved Memories Memories store (write) and retrieve (read) data Read-Only Memories (ROMs): Can only retrieve data (contents are initialized and then cannot be changed) Read-Write Memories (RWMs): Can retrieve data and change the contents to store new data Mark Redekopp, All rights reserved ROMs Memories are just tables of data with rows and columns When data is read, one entire row of data is read out The row to be read is selected by putting a binary number on the address inputs 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 A 2 A A 1 D 3 D 2 D 1 D 1 2 3 4 5 6 7 Address Inputs Data Outputs ROM Mark Redekopp, All rights reserved ROMs Memories are just tables of data with rows and columns When data is read, one entire row of data is read out The row to be read is selected by putting a binary number on the address inputs 1 1 1 1 1 1 1 1 1 1...
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EE101Lecture10 - Mark Redekopp, All rights reserved...

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