This document describes a 16-bit ALU design project created by a group of 5 students. It includes an introduction to ALUs and their applications in microprocessors and PLCs. The group implemented a 1-bit ALU using a 3 to 8 decoder, 8 to 1 MUX, full adder, and bit controller. They then expanded this to a full 16-bit ALU design, though faced issues simulating such a large logic file in DSCH and laying out in Microwind.

1. VLSI CIRCUIT DESIGN LAB
PROJECT:16-Bit ALU DESIGN
SEC:B
Course Instructor: SHANTANU KUMAR
NATH
AMERICAN INTERNATIONAL UNIVERSITY
BANGLADESH

2. Project Group Number: 10
GROUP MEMBERS
NAME ID
1.RAHMAN,TOWSIFUR - 16-31034-1
2. ISLAM,MD ASIFUL - 16-31081-1
3. HEMAL,MD SHARIAR - 16-31405-1
4. HASAN,NAHID - 16-31039-1
5. TALUKDER, ABDUR ROUF - 16-31217-1

3. Index
 Introduction
 Application
 Instrument parts of ALU design
 Operational Bits Truth Table
 Improvements
 1 Bit ALU design
 Full 16 Bit ALU
 What kind of improvement can be done
 Problem Faced
 Conclusion

4. Introduction:
 About ALU
 Combinational digital electronic circuit.
 Arithmetic and bitwise operations on
integer binary numbers
 arithmetic unit
 logic unit

5. Application:
 Multiple-precision arithmetic
 Logical, and decision operations
 Microprocessor , PLC

6. Instrument parts of ALU
design
3 TO 8 DECODER 8 TO 1 MUX

7. Instrument parts of ALU
design
Full adder Bit controller

8. Operational Bits Truth Table
A B C OPERATION
0 0 0 AND
0 0 1 OR
0 1 0 XOR
0 1 1 NAND
1 0 0 ADDER

9. Bit Controller
A B Output bit
No
0 0 2
0 1 4
1 0 8
1 1 16

10. 1 Bit ALU

11. Improvements
 Using decoder
 Bit Controller
 Power efficient

12. 1 Bit ALU design

13. 16 Bit ALU DESIGN

14. PROBLEM FACED
 DSCH cannot handling large amount of logic gate
 Microwind cannot implement very log file

15. Very Loge Code

16. Microwind Layout
16 bit Microwind Layout 1 bit Microwind Layout

17. CONCLUTION