Showing posts with label 7 segment. Show all posts
Showing posts with label 7 segment. Show all posts

Saturday, February 19, 2022

Word Generator in Multisim - 7 Segment Counter

Using the Word Generator for 7 Segment Counter Circuit

Date: 2/28/2022

Authors: Bits4Bots Team

We have designed simple 4 bit counter circuits using dip switches and ones using BCD to 7-segment decoder IC's. Here we use the Word Generator instrument in Multisim to send digital words or (bit patterns) into the digital circuit. 

  • Start by placing the Word Generator instrument onto the workspace. Locate this component on the right panel 0101 icon.
  • Next add at least one (1) 7 segment cathode display (any color)
  • Add at BCD to 7 Segment decoder. We used the 4511BP_5V
Power and ground the circuit according to the IC pinouts. See image. 


Wire the circuit by connecting the segments A-G to the decoder. The output pins (0-7) on the Word Generator are used to connect the BCD of the 4511BP chip. The enable (EN) - (~LE in Multisim)  pin is grounded. The LT and BI pins are connected to power. 


Double click the Word Generator component to configure the settings. 

Recommended settings:
  1. Frequency: 60Hz
  2. Controls: Cycle
  3. Display: Binary
  4. Trigger: Internal

Click the "set" tab to configure the following

  1.  Preset Pattern: Up Counter *starting at zero (0)
  2. Display Type: Hex
  3. Buffer Size: 0400 by default
  4. Output Voltage Level: 4.5V - High and 500mV - Low by default



Now run the simulation by clicking the green icon in the Multisim ribbon.


Further learning: Try adding a switch to control the trigger externally. Also add a second 7 segment display and cascade it to count up to 6 bits (63). If you are really into electronics how about adding three (3) 7 segment displays and counting up to 8 bits (255).




🖰 Drag and drop the snippet below and simulate it on your own.

Word Generator Snippet

If you enjoyed this project follow us here and on Instagram.



References: 

  1. https://www.digikey.com/en/maker/projects/how-to-interface-a-seven-segment-display-with-an-arduino/9c05f147618c4fe3b8bb79acce5c60e3
  2. https://zone.ni.com/reference/en-XX/help/375482B-01/multisim/wordgenerator/#:~:text=Multisim%2014.2%20Help,word%20generator%20to%20the%20circuit.
  3. https://images.slideplayer.com/19/5767463/slides/slide_22.jpg

Sunday, April 21, 2019

NI Multisim: Alphanumeric 15 segment display | Wired

Written by Larsha Johnson
4/21/2019

Wire an alphanumeric 15 segment display. Display a message, characters, & more!

Download free Multisim files at www.bits4bots.shop/blog 

Create your message using 7 segment displays in your next project.




Alphanumeric characters comprise the combination of the twenty-six characters of the alphabet (from A to Z) and the numbers 0 to 9. Therefore, 1, 2, q, f, m, p and 10 are all examples of alphanumeric characters. Symbols like *, & and @ are also considered alphanumeric characters.

Arduino| Message on a single 16 segment display

Written by Larsha Johnson
September 4/21/2019
Hi makers, here's a mini project that shows how to use 1 alpha numeric segment to display a message.



Create a single message on an Alphanumeric display.

Saturday, December 19, 2015

Multisim| Stopwatch Timer Cascading 7 Segments 74ls190 74ls47

Stopwatch Timer Cascading 7 Segment Displays

Written by Larsha Johnson
12/19/2015

In this blog a stopwatch is simulated in Multisim and converted to a PCB layout via Ultiboard

Build of material:

  1. Two 7 segment displays
  2. Resistor packs (100 Ohms) *included in updated model
  3. Two 74ls190 (up/down counters)
  4. Two 74ls47 (BCD decoder)
  5. 555 Timer (1MHz digital clock in Multisim)
  6. One toggle switch (up/down)
  7. 1 Tact push button switch (reset)


You will need: 
automatic_7_seg_counter.ms14
Download File



Seven segments are everywhere, clocks, elevators, microwaves, cars, etc.

To connect the 7 segments, match A-G segments to the pins of the decoder according to the datasheet. RI, BI, LT should be connected to VCC.
The 74ls190 can be preset to a specific start time.

Seven segments and decoders are one of the most common types of parts I used to build circuits during my first years studying Computer Engineering Technology. Knowing the difference between anode and cathode use to be a task as well as knowing which type of decoder to use. Now that I have played around with them I am able to build more circuits using the two. 


As a beginner you may want to try this 7 Segment Counter project. In the video you will see how I designed an up/down automatic counter and the list of parts I used. 

Snippet for drag and drop coming soon.
*Visit our Git page for free files. https://github.com/Bits4Bots

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