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Next article Severed hand in a jar Halloween display. So in normal operation, it’s held LOW. However, if you want to use this feature in your circuit, you simply connect a pull-up resistor to this pin with a pushbutton.

The equivalent decimal value of the binary value we feed into the data input pins will be shown.

Driving a 7 segment display with a 4511 BCD to 7 Segment Driver

For example, a on the matches to a on the 7 segment LED display, b matches with b, etc. The binary value is the equivalent of the decimal value of 6.

This establishes sufficient power to the chip. However, if you do want to use this feature, you can simply connect it to a pull-up resistor with a pushbutton. The pin-out for the is shown below, and the datasheet is available at here. When HIGH, this feature is not ativated.


The 4 input data pins, which control the digit which is shown on the 7-segment LED display, are D, C, B, and A which are pins 6, 2, 1, and 7, respectively. When LOW, the pin is in strobe mode, meaning it strobes the output to a given device, which in this case is a 7 xatasheet LED display.

This is just for information. Now controlling a 7 segment display like this is OK, but we can do much better. For example, if we want to display 6 on the 7 segment display, we input the value into the DBCA datashfet pins.

BE Datasheet catalog

We can show the digits 0 through 9. The photo below shows the finished circuit.

datasueet Every LED has a maximum forward current and forward voltage. So the highest value we can feed into iswhich is 9 in decimal. The is a pin chip. So, for example, if we want to show the decimal number 5, we give a value of to the DCBA data pins. In this circuit, we will build a BCD to 7 segment display decoder circuit using datassheet chip.

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4511bbe we will build a very simple circuit to drive a single digit. There are 4 data pins hold a binary value. So, for example, if we input into the data pins, we get the number 0.

Connecting a pin to ground or 0V puts the pin in a LOW state or value. This is how we adjust the value of these data pins. We cannot show any other digits on the 7 segment display.


So we can see which combinations of pushbuttons turned on displays which decimal values. Using the pushbuttons, you can manually see how depending on which pushbuttons we press, how the output changes in response. This pin is active LOW. Pin 3 is the LT pin, which is the Lamp Test pin.

First we need to familiarize ourselves with the 7 segment module. So it simply stores latches or stores the data without transferring to a device.

Since this is being powered by a 9V battery, I am using 1. A BCD to 7 segment decoder circuit is a circuit that intakes a binary value and displays the equivalent decimal value on the 7 segment display. Being that they are all connected to pull-down resistors, they are all initially LOW when unpressed.

When HIGH, the lamp test is activated. Using the 7 segments, you can make any decimal digit. Below, we will also explain how BCD to 7 segment display decoders work in great detail, specifically the chip.

We will use a DIP switch to turn various segments on and off.