Hello,
Does anyone know how I can use TTL such as 74245, 74373 to build a circuit which works same as the 8255? I attach the picture below.
I want to use that 4x4 keyboard and show a 5-digit number so I need five 7segment displays. But what I would like to know first is how I can change the 8255 for another equivalent schematic.
I would appreciate any hints.
Thanks
Does anyone know how I can use TTL such as 74245, 74373 to build a circuit which works same as the 8255? I attach the picture below.
I want to use that 4x4 keyboard and show a 5-digit number so I need five 7segment displays. But what I would like to know first is how I can change the 8255 for another equivalent schematic.
I would appreciate any hints.
Thanks
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