NAND NOR Only Circuits lab#7 PDF

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ECE301 Digital Electronics SP’21 Section-20x Lab#07 Lab Title: NAND & NOR Only Circuits Name: Date: 1.0

OBJECTIVE To design and build two-level circuits using NAND and NOR gates. To design a detector which can detect Fibonacci numbers from 0 to 7.

2.0

CIRCUIT DESIGN STEPS

Step 1: Listing the Fibonacci numbers between 1 and 7 Zero is considered as not a Fibonacci number here

F1 1

F2 1

F3 2

F4 3

F5 5

F6 8

F7 13

Step 2: Developing the Truth Table for Fibonacci numbers 1 to 7 Num 1 2 3 4 5 6 7 Truth table 2.1

A 0 0 0 0 0 0 0

B 0 0 0 1 1 1 1

C 0 1 1 0 0 1 1

D 1 0 1 0 1 0 1

F 1 1 1 0 1 0 0

Step 3: Drawing the K-Map for the Truth table 2.1

A’B 01

AB 11

AB’ 10

x

1

0

0

1

1

0

1

A’B’ 00 C’ 0 C 1

Step 4: Finding the Optimal functions to detect Fibonacci Numbers

Optimized over ‘1’s F (A, B, C, D) =ƩM (0,1,2,3,5) …… F=A’+B’C Optimized over ‘0’s F (A, B, C, D) =ƩM (4,6,7) … F=AB+AC’

Step 5: Convert the functions for NAND and NOR only functions. NAND only F=A’’’+B’’’C’ de-Morgan theorem =A’. B’C’ NOR only F=A’+B’C

Step 6: Circuit drawing with EasyEDA

NAND GATES...