7447 pin configuration

i want to know about ic 7447 pin configuration in details or what is lt,
rbi in 7447 ic

SUBHASIS CHANDRA said:

i want to know about ic 7447 pin configuration in details or what is lt,
rbi in 7447 ic

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All that information and more can be found in the datasheet. have a search on www.datasheetarchives.com

LT is lamp test, which turns on all segments so you can see if they're working
RBI is ripple blanking input, which is used to blank the leading zeros in a multi-digit display. It should be connected to RBO of the previous digit's 7447 or GND for the first segment.