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## Lect 1 Ch6 Oct 2015 .pdf

Original filename: Lect 1 Ch6 Oct 2015.pdf
Title: Slide 1
Author: David Buchla;k. amin

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2 ‫تصميم منطقي‬
Logic Design II
By
A. Prof. Khalid M. Amin

Course Contents

1.
2.
3.
4.
5.

3

Introduction and revision
Latches, Flip-Flops, and Timers
Shift Registers
Counters
Data Storage (Memory)

Floyd, Digital Fundamentals, 10th ed

Some Important Points

• Course Marks:
– 10 Midterm
– 10 Practical final exam
– 20 (Quizzes, Attendance, Experiments,
Reports)
– 60 Final

4

Floyd, Digital Fundamentals, 10th ed

Some Important Points

• Experiments &amp; tutorials
• Required Hardware List

5

Floyd, Digital Fundamentals, 10th ed

Lecture 1: Revision

6

Summary
Basic rules of binary addition are performed by a
half adder, which has two binary inputs (A and B)
and two binary outputs (Carry out and Sum).
The inputs and outputs can be summarized on a
truth table.

Inputs Outputs
A
0
0
1
1

B
0
1
0
1

Cout
0
0
0
1

S
0
1
1
0

The logic symbol and equivalent circuit are:
A

S

S

S
A

B

Cout

7 Floyd, Digital Fundamentals, 10th ed

B

Cout

Summary

Inputs

By contrast, a full adder has three binary
inputs (A, B, and Carry in) and two binary
outputs (Carry out and Sum). The truth table
summarizes the operation.
A full-adder can be constructed from two
A

A

S

S

A

S

S

A
0
0
0
0
1
1
1
1

B
0
0
1
1
0
0
1
1

Outputs
Cin
0
1
0
1
0
1
0
1

Cout
0
0
0
1
0
1
1
1

S
0
1
1
0
1
0
0
1

Sum
S

B

B

Cout

B

A

Cout

B
Cin

Cin
Cout

8 Floyd, Digital Fundamentals, 10th ed

S

Cout

Symbol

9

Floyd, Digital Fundamentals, 10th ed