Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
Whatsapp# 0331-
Note:
It is intimated that following Lectures will not be repeated and would be part
of mid-term & final exam as well.
Objectives:
In this week we will cover combinational circuit analysis and equation to circuit design.


Combinational circuit analysis
Equation to circuit design
1- COMBINATIONAL CIRCUIT ANALYSIS
In the previous lectures, we discussed logic gates in detail. This lecture is an application of logic
gates where we will see that if we have a combinational circuit, how can we analyze to tell the
functioning of a circuit.
Circuit#1
Starting from the inputs, solve each gate step by step
Step-1:
Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
Step-2:
Step-3:
Circuit #2
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Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
Step-1:
Step-2:
email id: noor@biit.edu.pk
Whatsapp# 0331-
Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
Step-3:
Step-4:
email id: noor@biit.edu.pk
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Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
Circuit#3
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Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
Step-1:
Step-2:
Step-3:
email id: noor@biit.edu.pk
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Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
Circuit#4
Step-1:
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Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
Solve the rest by your self (in steps)
Complete Solution:
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Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
PRACTICE EXAMPLES:
Example-1:
Example-2:
Example-3:
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Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
Whatsapp# 0331-
2- EQUATION TO CIRCUIT DESIGN
Example-1:
Y=AB+CD’
Divide the equation into 2 or 3 parts
3
Y=AB+CD’
1
2
Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
Step-1:
Step-2:
Step-3:
Example-2:
Y=B’{C+(D XOR F)}
Step-1:
D XOR F
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Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
Step-2:
C+{D XOR F}
Step-3:
Y=B’{C+(D XOR F)}
Example-3:
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Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
Whatsapp# 0331-
Q= AB+BC(B+C)
Practice Examples
y=AB’[C XOR D][C+D]’
Z=B’[X+Z]’[C’ XNOR E’]
Note: See chapter-2 and chapter-4 from course book for further examples
Assignment #3
Dear students read the given lectures carefully as per the course objectives mentioned on the top
and carryout the assignment as per following instructions
1. Submission Date: Sunday 22-March-2020 at 11:59PM ; This will also count as your
Attendance for this week.
2. You must prepare handwritten Assignment and send it to respective course teacher (after
scanning it) for assessment by email only.
Task to do:
Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
Whatsapp# 0331-
 Solve atleast 5 random examples either from internet, course books or draw circuits for
your self and solve them.
 Write down 5 equations for your self and draw their circuits.
Lab Work
Download proteus ISIS Professional from internet, if you get a crack version, crack it and
make it work. If you get a demo version, you will be able to use proteus but it will not
save your project. Below you are provided with the steps to successfully crack proteus
and make it work.
INSTALLATION OF PROTEUS 8 SP0
Click on ‘Setup.exe’
click ‘Next’.
Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
Accept terms of agreement and click next
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Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
Whatsapp# 0331-
select ‘Use a locally installed Licence Key’ and click ‘Next’.
Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
click ‘Next’.
email id: noor@biit.edu.pk
Whatsapp# 0331-
Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
Whatsapp# 0331-
Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
click on
email id: noor@biit.edu.pk
Whatsapp# 0331-
‘Browse For Key File’.
Now to run the setup you need to crack it, don’t open proteus yet, go to
folder ‘CRACK’. Available along with the setup
Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
Whatsapp# 0331-
open
Click on ‘LICENCE.lxk’ and install the keys
Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
Whatsapp# 0331-
open
Now click on ‘Install’.
Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
Now click on yes
email id: noor@biit.edu.pk
.
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Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
Whatsapp# 0331-
yes
After installation click on ‘Close’.
Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
click ‘Next’.
email id: noor@biit.edu.pk
Whatsapp# 0331-
Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
Select ‘Typical’,
email id: noor@biit.edu.pk
Whatsapp# 0331-
Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
Whatsapp# 0331-
Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
when the setup will be complete, click on close
Whatsapp# 0331-
Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
Whatsapp# 0331-
Go to the original Proteus folder, open ‘CRACK’, copy ‘BIN’ and
‘MODELS’ Folder and paste it in the proteus folder created in your
system…
Expected Paths are given below
copy
C:\ programs\Labcenter Electronics\Proteus 8 Professional
C:\Program Files (x86)\Labcenter Electronics\Proteus 8 Professional
path
Replace this folder
paste
Paste the BIN and MODELS folder here, and replace them with previous
folders on your path.
Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
yes
Whatsapp# 0331-
Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
Whatsapp# 0331-
Digital Logic Design (CS-430)
Mrs Noor Ul Ain
9578186[Document title]
email id: noor@biit.edu.pk
Here you go 😊
Video Lecture Links:
Part-1: https://youtu.be/mN1_rylc4II
Part-2: https://youtu.be/hstluT-mODw
Part-3: https://youtu.be/FiJK1RQk0-I
Lab Work: https://youtu.be/uuchHaw6Tgo
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