ET1220: Module 1 Introduction to Digital Technology Lab 1.1 Lab Report Name: Date: Grade: Instructions: · Complete Part 1, then Part 2 sections of the Lab 1.1. Then, complete this Lab Report by filling in all details. Use information you gained during your experimentation to complete the answers. · Be sure to submit your lab report before the deadline. Part 1- Binary-to-Decimal Number Conversion Theory: 1. Enter the decimal, hexadecimal, and BCD numbers for each of the following binary numbers. Binary Hexadecimal BCD Decimal 0000 0 0000 0 0001 1 0001 1 0010 2 0010 2 0011 3 0011 3 0100 4 0100 4 0101 5 0101 5 0110 6 0110 6 0111 7 0111 7 1000 8 1000 8 1001 9 1001 9 1010 A Invalid 10 1011 B Invalid 11 1100 C Invalid 12 1101 D Invalid 13 1110 E Invalid 14 1111 F Invalid 15 2. Explain major differences between binary and BCD numeric representations. Ans 2: BCD each digit of a decimal number is coded as a 4 bit binary number between 0 and 9. This is not used too often as it is difficult to do calculations in BCD as opposed to binary, and it is not efficient – uses more bits than a binary coded number would.  In Binary the number is converted to base 2, binary code.  Planning: 1. Provide a list of places that you can obtain the datasheets for the following components: · SN74LS47 Binary to BCD Decoder http://www.onsemi.com/pub_link/Collateral/SN74LS47-D.PDF · MAN72 Seven Segment Display http://web.ece.ucdavis.edu/~bbaas/180a/Datasheets/man72a.pdf · 4116R 1-331 330 ohm Resistor Pack http://www.digchip.com/datasheets/parts/datasheet/1896/4116R-1-331-pdf.php Preparation: 2. Why is it important to follow ESD safety procedures when handling electronic components? What are some of the main considerations? Ans2 These precautions protect sensitive electronic components Extremely fast response time Low clamping and operating voltage Capacity of handle high peak ESD current Ability to remain undamaged by repetitive ESD strikes Minimize size Minimal reverse leakage current Wiring Procedure: 3. Complete the wiring diagram. Refer to Lab 1.1 Figure 1-4 and image 1 & 2 of the ET1220.U1.Lab.Images PowerPoint. Use MS Paint to complete the wiring diagram. Test Procedure: 4. Record the observed values from Lab 1.1 Table 1-1. Indicate which segments are illuminated for each input setting. Inputs Output Binary Data Lines BCD Number Seven Segment Display 3 2 1 0 0 0 0 0 0000 0 0 0 1 0001 0 0 1 0 0010 0 0 1 1 0011 0 1 0 0 0100 0 1 0 1 0101 0 1 1 0 0110 0 1 1 1 0111 1 0 0 0 1000 1 0 0 1 1001 1 0 1 0 Invalid 1 0 1 1 Invalid 1 1 0 0 Invalid 1 1 0 1 Invalid 1 1 1 0 Invalid 1 1 1 1 Invalid Troubleshooting: 5. For each trouble investigated, record your observations from Lab 1.1 Table 1-2. Trouble Trouble Observations 1 LED for the C segment is open. Break the connection to pin C of the 7-segment display (remove the wire). Accept 2 All output will be wrong 2 An inp ...

1. ET1220: Module 1 Introduction to Digital Technology
Lab 1.1
Lab Report
Name:
Date:
Grade:
Instructions:
· Complete Part 1, then Part 2 sections of the Lab 1.1. Then,
complete this Lab Report by filling in all details. Use
information you gained during your experimentation to
complete the answers.
· Be sure to submit your lab report before the deadline.
Part 1- Binary-to-Decimal Number Conversion
Theory:
1. Enter the decimal, hexadecimal, and BCD numbers for each
of the following binary numbers.
Binary
Hexadecimal
BCD
Decimal
0000
0
0000
0
0001
1
0001

2. 1
0010
2
0010
2
0011
3
0011
3
0100
4
0100
4
0101
5
0101
5
0110
6
0110
6
0111
7
0111
7
1000
8
1000
8
1001
9
1001
9
1010
A
Invalid

3. 10
1011
B
Invalid
11
1100
C
Invalid
12
1101
D
Invalid
13
1110
E
Invalid
14
1111
F
Invalid
15
2. Explain major differences between binary and BCD numeric
representations.
Ans 2:
BCD each digit of a decimal number is coded as a 4 bit binary
number between 0 and 9. This is not used too often as it is
difficult to do calculations in BCD as opposed to binary, and it
is not efficient – uses more bits than a binary coded number
would.
In Binary the number is converted to base 2, binary code.
Planning:
1. Provide a list of places that you can obtain the datasheets for
the following components:
· SN74LS47 Binary to BCD Decoder

4. http://www.onsemi.com/pub_link/Collateral/SN74LS47-D.PDF
· MAN72 Seven Segment Display
http://web.ece.ucdavis.edu/~bbaas/180a/Datasheets/man72a.pdf
· 4116R 1-331 330 ohm Resistor Pack
http://www.digchip.com/datasheets/parts/datasheet/1896/4116R-
1-331-pdf.php
Preparation:
2. Why is it important to follow ESD safety procedures when
handling electronic components? What are some of the main
considerations?
Ans2
These precautions protect sensitive electronic
components
Extremely fast response time
Low clamping and operating voltage
Capacity of handle high peak ESD current
Ability to remain undamaged by repetitive ESD strikes
Minimize size
Minimal reverse leakage current
Wiring Procedure:
3. Complete the wiring diagram. Refer to Lab 1.1 Figure 1-4
and image 1 & 2 of the ET1220.U1.Lab.Images PowerPoint.
Use MS Paint to complete the wiring diagram.
Test Procedure:
4. Record the observed values from Lab 1.1 Table 1-1. Indicate
which segments are illuminated for each input setting.
Inputs
Output
Binary

5. Data Lines
BCD Number
Seven Segment Display
3
2
1
0
0
0
0
0
0000
0
0
0
1
0001
0
0
1

6. 0
0010
0
0
1
1
0011
0
1
0
0
0100
0
1
0
1
0101
0
1
1

7. 0
0110
0
1
1
1
0111
1
0
0
0
1000
1
0
0
1
1001
1
0
1

8. 0
Invalid
1
0
1
1
Invalid
1
1
0
0
Invalid
1
1
0
1
Invalid
1
1
1
0
Invalid
1
1
1
1

9. Invalid
Troubleshooting:
5. For each trouble investigated, record your observations from
Lab 1.1 Table 1-2.
Trouble
Trouble
Observations
1
LED for the C segment is open. Break the connection to pin C
of the 7-segment display (remove the wire).
Accept 2
All output will be wrong
2
An input to the 7447 is open. Break the connection to the input
A pin of the 7447 (remove the wire).
Odd numbers will not display
3
1000 ohm resistor is open. (Remove the 1kΩ resistor).
Output will be blank
6. Assume that the switches are set to a binary 1000 value, but
the display shows a zero. What are three possible causes for
this error?
Ans6:
1. The input D pin of the 7447 is open .
2. LED for the f segment is open.
3. Power supply to switch is open .
Part 2- Binary-Number Addition and Two’s Complement

10. Subtraction
Theory:
9. Provide the results for the half-adder truth table.
A0
+
B0
S1S0
0
+
0
00
0
+
1
01
1
+
0
01
1
+
1
10
10. Provide the results for the full-adder truth table.

11. A0
+
B0
+
Cin
CoutS
0
+
0
+
0
00
1
+
0
+
0
01
0
+
1
+
0
01
0
+
0
+
1

12. 01
1
+
1
+
0
10
1
+
0
+
1
10
0
+
1
+
1
10
1
+
1
+
1
11
Planning:
11. Provide a list of places (links) where you can obtain the
datasheets for the following components:
· 74LS08 Quad AND Gate
http://www.cs.smith.edu/~thiebaut/270/datasheets/sn74ls08rev5.
pdf

13. · 74LS32 Quad OR Gate
http://www.cs.smith.edu/~thiebaut/270/datasheets/sn74ls32rev5.
pdf
· 74LC86 Quad XOR Gate
https://courses.cs.washington.edu/courses/cse477/99au/assignm
ents/lab2/74ls86.pdf
Preparation:
12. What are several important things you should consider
before wiring your circuit?
Answer :
1. Make sure that the power supply is switch off
2. Test the wire
3. Test your ICs
4. Draw the rough sketch with ICs PIN number before actual
connection to avoid any confusion while wiring circuit on
breadboard
Wiring Procedure:
13. Complete the adder wiring diagram. Refer to Lab 1.1 Figure
1-12 and image 10 of the ET1220.U1.Lab.Images PowerPoint.
Use MS Paint to complete the wiring diagram.
Test Procedure:
14. Record the observed values from Lab 1.1 Table 1-3.
Switch
Switch

14. 4
3
Decimal Value of B
2
1
Decimal Value of A
B1
B0
A1
A0
Calculated
Sum
7-Segment
Display
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1

15. 0
0
0
1
0
2
2
2
0
0
0
1
1
3
3
3
0
1
1
0
0
0
1
1
0
1
1
0
1
1
2
2
0
1
1
1

16. 0
2
3
3
0
1
1
1
1
3
4
4
1
0
2
0
0
0
2
2
1
0
2
0
1
1
3
3
1
0
2
1
0
2
4
4

17. 1
0
2
1
1
3
5
5
1
1
3
0
0
0
3
3
1
1
3
0
1
1
4
4
1
1
3
1
0
2
5
5
1
1
3
1

18. 1
3
6
6
4