Using the Word Generator for 7 Segment Counter Circuit
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
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.
- Frequency: 60Hz
- Controls: Cycle
- Display: Binary
- Trigger: Internal
Click the "set" tab to configure the following
- Preset Pattern: Up Counter *starting at zero (0)
- Display Type: Hex
- Buffer Size: 0400 by default
- 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.
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