Hi, im trying to make a big digital clock , each segment is described as in the picture , the problem is i know how to drive 7-segment displays using BCD to 7-seg decoder , but in the display for example 00:00 has more than 7 segments as shown , what kind of decoder should i use ?
Hi, im trying to make a big digital clock , each segment is described as in the picture , the problem is i know how to drive 7-segment displays using BCD to 7-seg decoder , but in the display for example 00:00 has more than 7 segments as shown , what kind of decoder should i use ?
thanks for the reply ,
i mean of each digit it has 20 LEDs , how i will drive these all ? and i really didnt imagine they are 7 segment , how ? suppose number 8 is there , sure there are more than 7 LEDs will be driven ..
thanks for the reply ,
i mean of each digit it has 20 LEDs , how i will drive these all ? and i really didnt imagine they are 7 segment , how ? suppose number 8 is there , sure there are more than 7 LEDs will be driven ..
each of those 20 LED's should be divided into 7 'lots' and put in series [hopefully] meaning they really act as one LED.
7 segment is called that as there are 7 different horizontal and vertical lines that can be switched on or off to represent the numbers 0-9, 8 just uses all of them
Sometimes you see these multiplexed, so every 7 segment will have the same input, but a different ground.
We cant tell without a datasheet tho
and as Eric noted, it will have to be 12-hour clock