Bits4Bots - 4 Bit Binary Manual Counter: NI Multisim (Video Included)

Hi there. New to Multisim? This is for you!

In this project we will build a simple 4 bit manual counter using NI Multisim software.

Newbie special :) Follow us for more cool projects and visit us at www.bits4bots.com

NI Multisim Software

******Parts needed: www.bits4bots.com

• 4 Pin Dip Switch
• 74LS47 TTL
• 7 Segment Display (any color)
• Jumper Wires
• 5V Power Supply

FAQ:

Hey Bits4Bots I want to build this but I have only have a 74LS48 TTL.

Answer: No problem. If you use a 74LS48 TTL you will need to use a Common Cathode Display.

Open Multisim

• Select components needed. I have decided to use images for this process.

Click the tabs in order that are circled in red or highlighted.

• Connect the top 4 pins of the dip switch to VCC (5V)
• Connect the bottom row of the dip switch pins individually to the A, B, C & D of the 74LS47 IC
• Connect the 74LS47 accordingly.
• Pin 3, 4 & 5 of the 74LS47 should be powered.
• Connect the 7 Segment Display. I used a Common Anode.

Now that everything is connected we can now test the circuit.

A zero should show on the display when the circuit is powered.

• When the right>>>>>most switch is on (high) the display should show a 1.
• Flip the switch to low again.
• Move one over to the left<<<< and flip the switch. A 2 should display.
• To display the number 3 flip both previous switches.
• By now you should have an idea of how the manual counter works :)

I have included a binary to decimal chart for your convenience.

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Thanks :)