# [ASK]What IC can display A-F to 7-segment LED

• ajmosca25
In summary, the conversation is about creating a BCD 4bits Full adder and connecting it to a 7447 BCD to 7-segment display. The speaker needs help with their circuit as they only need a 3bits-3bits addition and want to display letters A-F instead of the default light up of the 7447. They are considering using an MC14495 IC to convert 10-15 to A-F in the 7-segment display.
ajmosca25
guys, you just created a circuit a BCD 4bits Full adder but in my case i just need a 3bits-3bits addition so that i set the A4 to 0 by default...

i used 7483 for 4bits full adder and connect it to a 7447 BCD to 7-segment

A4A3A2A1 + B43B2B1

A4 & B4 are set to 0

so 7 is the maximum value in one input..

my problem is when A+B = greater 9...i need to display a real letter A-F not the default light up of 7447

ex.

101(5) + 101(5) = A (bit letter A)
110(6) + 101(5) = b (small letter b)
111(7) + 101(5) = C (big letter C)
110(6) + 111(7) = d (small letter d)
111(7) + 111(7) = E (small letter E)

but in default in 7447

111(7) + 111(7) = inverted big letter F...

is there an IC which can convert 10-15 to A-F in 7segment led?

or just another IC which can configure 7447?

Last edited by a moderator:
ajmosca25 said:
guys, you just created a circuit a BCD 4bits Full adder but in my case i just need a 3bits-3bits addition so that i set the A4 to 0 by default...

i used 7483 for 4bits full adder and connect it to a 7447 BCD to 7-segment

A4A3A2A1 + B43B2B1

A4 & B4 are set to 0

so 7 is the maximum value in one input..

my problem is when A+B = greater 9...i need to display a real letter A-F not the default light up of 7447

ex.

101(5) + 101(5) = A (bit letter A)
110(6) + 101(5) = b (small letter b)
111(7) + 101(5) = C (big letter C)
110(6) + 111(7) = d (small letter d)
111(7) + 111(7) = E (small letter E)

but in default in 7447

111(7) + 111(7) = inverted big letter F...

is there an IC which can convert 10-15 to A-F in 7segment led?

or just another IC which can configure 7447?

Welcome to the PF.

Instead of "BCD to 7-segment display driver", try Googling Hex to 7-segment display driver...

ok, i see an IC, but I am not sure if it is the IC i need...

MC14495...

im studying its datasheet right now, thanks btw...

~yes i am new here in PF, thanks for welcoming...Overwhelming...^_^

## 1. What is a 7-segment LED display?

A 7-segment LED display is a type of electronic display device that utilizes seven individual segments to form numbers and some letters. Each segment is composed of an LED (light-emitting diode) and can be turned on or off to create different characters.

## 2. What is the purpose of displaying A-F on a 7-segment LED?

A 7-segment LED can display A-F in addition to numbers to represent hexadecimal digits. This is commonly used in electronic devices to display error codes or memory addresses in hexadecimal format.

## 3. What is an IC?

An IC (integrated circuit) is a small electronic chip that contains multiple components, such as transistors, resistors, and capacitors, all etched onto a tiny piece of semiconductor material. ICs are used in electronic devices to perform various functions, such as amplification, switching, and logic operations.

## 4. How does an IC display information on a 7-segment LED?

An IC designed for 7-segment LED display contains a decoder and driver circuit that takes in a binary input and converts it into signals to turn on or off the appropriate LED segments to display the desired character. The IC also includes a clock to synchronize the display refresh rate.

## 5. Are there different types of ICs for 7-segment LED display?

Yes, there are various types of ICs for 7-segment LED display, such as BCD-to-7-segment decoders, hex-to-7-segment decoders, and multiplexed 7-segment display drivers. The type of IC needed depends on the application and the number of digits to be displayed.

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