7 Segment Hexadecimal Driver
7-Segment Hexadecimal Display Driver If you build your own microcomputers, or repair older ones (see bus display below), you have probably run into the need to display hexidecimal values on a 7-segment LED display. An internet search will quickly turn up a few options: the MC14495, EP/EEP-ROMS, GALs, and discrete logic.
Each of these solutions have advantages and disadvantages:
The MC14495 uses a lot of current (up 10 100ma per display), and they cost over $10 each EPROMS/ROMS work just fine, but tend to have larger DIP packages, and require external components (current limiting resistors).