EXTREM URGENTLTY FOR NEED MULTYPLEXED SEVEN SEGMENT DOCUMENTAR

You need to understand what multiplexing is .I would quickly sum ups as , in a 7 segment display all the LEDs are named a,b,c,d,e,f,g for each digit say four "8888" . Now all the 'a' are connected in parallel wit 'a' and 'b' with 'b' and so on till 'g' . And they have common LED anodes (cathodes are also there) which supplies voltage to only one digit OK. This way if you want to display say 1234 , first you glow f,e pins(refer to ICM7217 page 9-22) of all the 4 digits , BUT supply the anode voltage to only the first digit ,wow you can see 1 written on the display. Since you also need 2 now you withdray connection from first digit anode and its alpha digits , and supply the logic a,b,g,e,d and this time supply connection to second digit anode and so on . This process is repeated with very fast speed and our eyes are not able to distinguish the on/off time generated by the multiplexing procedure.

i got the text from here

7-Segment multiplexing based on inersial vison of human eye. human eye can't detect switchig of light or others faster than about 20 HZ (Standard move 25 fps).
for example 25 hz then we have 40 ms for refresh all 7-segments. if 4 set of 7-segment be used then for each set we have about 10 ms for on and 30 ms off. and ....
Ts

You need to understand what multiplexing is .I would quickly sum ups as , in a 7 segment display all the LEDs are named a,b,c,d,e,f,g for each digit say four "8888" . Now all the 'a' are connected in parallel wit 'a' and 'b' with 'b' and so on till 'g' . And they have common LED anodes (cathodes are also there) which supplies voltage to only one digit OK. This way if you want to display say 1234 , first you glow f,e pins(refer to ICM7217 page 9-22) of all the 4 digits , BUT supply the anode voltage to only the first digit ,wow you can see 1 written on the display. Since you also need 2 now you withdray connection from first digit anode and its alpha digits , and supply the logic a,b,g,e,d and this time supply connection to second digit anode and so on . This process is repeated with very fast speed and our eyes are not able to distinguish the on/off time generated by the multiplexing procedure.

i got the text from here

7-Segment multiplexing based on inersial vison of human eye. human eye can't detect switchig of light or others faster than about 20 HZ (Standard move 25 fps).
for example 25 hz then we have 40 ms for refresh all 7-segments. if 4 set of 7-segment be used then for each set we have about 10 ms for on and 30 ms off. and ....
Ts

"7-Segment multiplexing based on inersial vison of human eye"

I think you mean "inertial" - and the more common term is "Persistence of Vision"

The same applies to any sort of display multiplexing - not just 7-segment.

Also note that the symbol for hertz is "Hz" - uppercase 'H', lowercase 'z'.

TRIS

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THE FOREM IS GOOD AND YOU ARE THE BEST.

GOOD LIFE AND HAPENESS FOR YOU.

Also note that the symbol for hertz is "Hz" - uppercase 'H', lowercase 'z'.

Andy,

Not sure that a minor detail like that is going to bother the OP - He's still probably going to shout the lowercase 'z' anyway.