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7432 ICs are used for summing purposes

The 7432 is a quad dual input OR gate. That means that the device contains four identical two input OR gates. It is often in a 14 pin package, and as each gate has three connections, there are 12 logic pins, a ground pin, and a power supply (5 volts) pin, making a total of 14 pins.

See

http://html.alldatasheet.com/html-pdf/51073/FAIRCHILD/7432/403/1/7432.html

For a datasheet.

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10y ago
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The 7448 integrated circuit is a BCD to 7-segment display decoder. In other words a BCD, or binary coded decimal (such as 0101), is sent to the IC via 4 input ports. The IC then translates this into another value, which is then sent to a 7-segment number display which then displays the decimal value of the BCD.

If you sent the BCD 1001 to the IC, it would then send out a signal to the 7-segment display which would then show the number 9, which is the decimal value of 1001.

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Q: What is the use of 7448 IC?
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