2.3.1
What do alarm clocks, cable TV converter boxes, home answering machines, and inexpensive calculators all have in common? In addition to being built from electronics, many also include seven-segment displays as part of their design.
There are two types of seven-segment displays, common cathode and common anode. Understanding how these displays work and the differences between them is fundamental to designing many different types of electronic devices.
In this activity you will learn how to use seven-segment displays to display both alpha and numeric characters.
1. Complete the wiring of the seven-segment displays shown below so that they will display your age. If you are 15, display a (1) on the common cathode display and a (5) on the common anode display.
- For (5) you would want A,C,D,F, and G on, and for (1) you would want B and C
2. List five words of three characters or more that you could spell out using a seven-segment display. Don’t forget about lower case characters. Be creative. Be polite.
- APrIL, bILL, SLoP, roLL, CALL
What do alarm clocks, cable TV converter boxes, home answering machines, and inexpensive calculators all have in common? In addition to being built from electronics, many also include seven-segment displays as part of their design.
There are two types of seven-segment displays, common cathode and common anode. Understanding how these displays work and the differences between them is fundamental to designing many different types of electronic devices.
In this activity you will learn how to use seven-segment displays to display both alpha and numeric characters.
1. Complete the wiring of the seven-segment displays shown below so that they will display your age. If you are 15, display a (1) on the common cathode display and a (5) on the common anode display.
- For (5) you would want A,C,D,F, and G on, and for (1) you would want B and C
2. List five words of three characters or more that you could spell out using a seven-segment display. Don’t forget about lower case characters. Be creative. Be polite.
- APrIL, bILL, SLoP, roLL, CALL
2.3.2
In your digital electronics class of 20, there is a 6.8% probability that two of you share the same date of birth. This is assuming that you are all the same year level (sophomore/junior). If you are not, the probability would be even lower.
Your date of birth makes you unique. We are going to use this uniqueness to design a circuit that will display your date of birth on a single seven-segment display. Admittedly, this design does not have any real practical application, but is a fun exercise that will bring together all of the design techniques that you have learned in this lesson.
Your date of birth may make you unique in your class, but in 2006 there were 263,898,574,096 births world-wide. This means that on a daily basis, over 700,000,000 individuals share the same date of birth.
1. Using your engineering notebook/portfolio as a guide, write a conclusion (minimum 250 words) that describes the process that you used to design, simulate, and build your Date of Birth circuit. This conclusion must include all of your design work (i.e., truth table, K-Maps, etc), preliminary and final schematics, parts list, and a digital photograph of your final circuit. The documentation should be complete enough that another student with the same knowledge of digital electronics could reproduce your design without any additional assistance.
- So How to build a birthday display, a seven segment display have 7 inputs, each controls a LED. these LED's are labeled A-G, Starting at the top LED and going to the right the LED's are labeled in order with "G' in the middle. now that you understand a seven segment display, the paper work must start. so the first thing you should do is wright out you birthday like so (MM-DD-YY) this gives you 8 digits which is the same amount as 3 inputs using binary. so yes you will have 3 switches and use them as it was a binary counter. but moving on, so make a binary list or logic table, wright down what is on at what time. then K-map all LED's then create your curic.
In your digital electronics class of 20, there is a 6.8% probability that two of you share the same date of birth. This is assuming that you are all the same year level (sophomore/junior). If you are not, the probability would be even lower.
Your date of birth makes you unique. We are going to use this uniqueness to design a circuit that will display your date of birth on a single seven-segment display. Admittedly, this design does not have any real practical application, but is a fun exercise that will bring together all of the design techniques that you have learned in this lesson.
Your date of birth may make you unique in your class, but in 2006 there were 263,898,574,096 births world-wide. This means that on a daily basis, over 700,000,000 individuals share the same date of birth.
1. Using your engineering notebook/portfolio as a guide, write a conclusion (minimum 250 words) that describes the process that you used to design, simulate, and build your Date of Birth circuit. This conclusion must include all of your design work (i.e., truth table, K-Maps, etc), preliminary and final schematics, parts list, and a digital photograph of your final circuit. The documentation should be complete enough that another student with the same knowledge of digital electronics could reproduce your design without any additional assistance.
- So How to build a birthday display, a seven segment display have 7 inputs, each controls a LED. these LED's are labeled A-G, Starting at the top LED and going to the right the LED's are labeled in order with "G' in the middle. now that you understand a seven segment display, the paper work must start. so the first thing you should do is wright out you birthday like so (MM-DD-YY) this gives you 8 digits which is the same amount as 3 inputs using binary. so yes you will have 3 switches and use them as it was a binary counter. but moving on, so make a binary list or logic table, wright down what is on at what time. then K-map all LED's then create your curic.