DIGITAL SYSTEM DESIGN LAB MANUAL (EE-326-F)

DIGITAL SYSTEM DESIGNLAB MANUAL(EE-326-F)

VI SEMESTER

ELECTRONICS & COMMUNICATION ENGINEERING

DEPARTMENT OF ELCTRONICS & COMMUNICATION ENGINEERINGDRONACHARYA COLLEGE OF ENGINEERINGKHENTAWAS, GURGAON 123506

CONTENTSDIGITAL SYSTEM DESIGN (EE-326-F)VI SEMESTER (E&CE)LIST OF EXPERIMENTS

S.NO.EXPERIMENTPage No.

PERFORM ANY FIVE EXPERIMENT USING VHDL

1Design all gates using VHDL.3

2Write VHDL programs for the following circuits, check the wave forms and the hardware generateda. Half adderb. Full adder7

3 Write VHDL programs for the following circuits, check the wave forms and the hardware generateda. Multiplexerb. Demultiplexer13

4Write VHDL program for encoder and check the wave forms and the hardware generated.19

5Write a VHDL program for a decoder and check the wave forms and the hardware generated.22

6Write a VHDL program for a Down counter and check the wave forms and the hardware generated.25

7Write a VHDL program for a BCD to GRAY code converter and check the wave forms and the hardware generated.28

8Write a VHDL program for a T FLIP-FLOP and check the wave forms and the hardware generated.31

PERFORM ANY FIVE EXPERIMENT USING FPGA AND CPLD

9Implement Half Adder using FPGA & CPLD.34

10Implement Full Adder using FPGA & CPLD.35

11Implement Delay Flip flop using FPGA & CPLD.38

12Implement BCD to 7 segments Decoder using FPGA& CPLD.41

13Implement an Up Counter using FPGA & CPLD.44

14Implement 1-bit Comparator using FPGA & CPLD .47

15Implement ALU using FPGA & CPLD.49

Practical No. 1

Aim:- To Design Logic Gates using VHDL

LOGIC GATES:

Alogic gateperforms alogical operationon one or more logic inputs and produces a single logic output. The logic normally performed isBoolean logicand is most commonly found indigital circuits. Logic gates are primarily implemented electronicallyusingdiodesortransistors,but can also be constructed using electromagneticrelays(relay logic),fluidic logic,pneumatic logic,optics,molecules, or evenmechanicalelements.

INPUTOUTPUT

ABA AND B

000

010

100

111

AND

INPUTOUTPUT

ABA OR B

000

011

101

111

ORA+B

INPUTOUTPUT

ANOT A

01

10

NOT

In electronics a NOT gate is more commonly called an inverter. The circle on the symbol is called abubble, and is generally used in circuit diagrams to indicate an inverted (active-low) input or output.

INPUTOUTPUT

ABA NAND B

001

011

101

110

NAND

INPUTOUTPUT

ABA NOR B

001

010

100

110

NOR

INPUTOUTPUT

ABA XOR B

000

011

101

110

XOR

INPUTOUTPUT

ABA XNOR B

001

010

100

111

XNORor

Program:

----------------------------------------------------------------------------------library IEEE;use IEEE.STD_LOGIC_1164.ALL;use IEEE.STD_LOGIC_ARITH.ALL;use IEEE.STD_LOGIC_UNSIGNED.ALL;

entity all_ga is Port ( a : in STD_LOGIC; b : in STD_LOGIC; c : out STD_LOGIC; c1 : out STD_LOGIC; c2 : out STD_LOGIC; c3 : out STD_LOGIC; c4 : out STD_LOGIC; c5 : out STD_LOGIC; c6 : out STD_LOGIC);end all_ga;

architecture Behavioral of all_ga is

beginc g g g g g g g g