Logic World – 7 Segment Display with 4 Bits Addressing

Logic World – 7 Segment Display with 4 Bits Addressing 1 - steamlists.com
Logic World – 7 Segment Display with 4 Bits Addressing 1 - steamlists.com

A simple 7 segment display with 4 bit addressing.
 
 

Introduction

This is the English translation of my guide to building a 7 segment display.
 
7 Segment Anzeige mit 4 Bit Adressierung – [steamcommunity.com] 
 
Hier gehts zur Deutschen Version.
 
 
In this guide I will show you how to build a simple 7 segment display and control it with 4 bits.
 
The display and the address block are modular, which simplifies copying or expanding.
 
In addition, we are building a test station for the display.
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Introduction - 3490535
 
Am Ende wird sich folgende Tabelle ergeben:
 

1 (2^0)2 (2^1)4 (2^2)8 (2^3)Anzeige
00000
10001
01002
11003
00104
10105
01106
11107
00018
10019
0101A
1101B
0011C
1011D
0111E
1111F

 
 
 

7 Segment Display

The construction of the 7 segment display is the simplest part of this project.
 
The display is built on a 9×4 board.
 
The actual display is embedded in a 9×11 plate.
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - 7 Segment Display - 1F54D35
 
Each segment consists of 3 recessed lights.
 
The segments are interconnected and marked with a small letter.
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - 7 Segment Display - 4E38CC5
 
To keep the display modular and easy to connect I included a connector s*rip. Simply connect the plug to the corresponding letter.
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - 7 Segment Display - 30B8923
 
That would finish the display. However, a control is still missing.
 
 
 

Controlling with 4 bits

The control is kept simple.
 
I use 4-bit addressing for the individual numbers, which means there will be an address board for each number. All will be connected at the side via a bus.
 
 
The structure gets a little bigger. If you want to use all 16 numbers, the base plate will be 9×48
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - 431440A
 
If you only want to use 8 numbers, you can of course shorten them the plate to half.
 
 
The first address board differs from the others because of the connectors on the side for the bus connection. The board is 9×7 in size.
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - F1CA18C
 
This is the front of the address block, the 7 segment display will be docked here later.
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - 601242A
 
Here you can see the structure for the number 0 on the back of the circuit board.
 
 
For the later circuit boards, I recommend preparing a circuit board
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - 58A55A1
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - FA2D48C
 
The board is 8×7 in size.
 
If necessary, the inverters are exchanged for nodes.
 
The structure should be on the same site as the first board.
 
 
From here follows a series of pictures of the other address cards.
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - 49410A8
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - 51587AB
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - 1A763BF
 
 
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Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - F0A84DF
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - 8F3650D
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - 55DF5BC
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - E7942F6
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - 6F4B945
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - 4694F1A
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - 0DC5ABC
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - 9089B4C
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - 43D0191
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - 4516321
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - 00F7B61
 
With that you would have all the address cards ready.
 
 
If you want, you can also mount connector strips at the back:
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - B6EA181
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - D73C9DB
 
But this is purely optional.
 
 
All you have to do now is connect the bus lines on the sides:
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - EA77B34
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Controlling with 4 bits - EEEDD38
 
With that, the address module would be finished, just place the 7 segment display on the front of circuit board 1 and you’re done.
 
 
 

Teststation

With the test station you can specify the 4 bits or run a random number generator:
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Teststation - 02C01FA
 
The 4 bits are specified via switches.
 
The connection goes first to the lamps and then to the plugs.
 
 
The random number generator requires 4 oracles, 1 delayer and an inverter:
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - Teststation - 0D1FEFC
 
A clock generator is built from the delay and the inverter.
 
First set the delay to 30 and then connect the output to the input of the inverter and then the output of the inverter to the input of the delay.
 
At Oracles you connect the inputs together and then with the output of the delay.
 
Then connects the output of the Oracle with the associated bit on the connector.
 
 
To switch the random number generator on and off you set a switch and turn it 180°, connect it to the inverter input of the clock generator.
 
The inverter next to the switch is for inverting the switch signal to the lamp.
 
 
This completes the test station.
 
It only has to be placed to the right of the 7 segment display, then you can test the display.
 
 
 

End

When you are full size and have the test station built it should now look like this from above.
 
 
Logic World - 7 Segment Display with 4 Bits Addressing - End - 03C2AE4
 
Of course, this is just an example, you could also stack the address cards, for example.
 
There are of course other ways to control the 7 segment display, but this is the simplest and fastest solution
 
 
I hope you liked the guide and found it helpful.
 
 
Check out my other guide:
 
Logik Bausteine – [steamcommunity.com] 
 
But that is still a work in progress and not in english in moment
 
 
Write me if you have any questions or comments.
 
 

Written by Farnar

 
 
I hope you enjoy the Guide we share about Logic World – 7 Segment Display with 4 Bits Addressing; if you think we forget to add or we should add more information, please let us know via commenting below! See you soon!
 
 


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