Electronics Projects, Alphanumeric Display Drivers Circuit with PIC16F874 Hi tech C article
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Pic16f874p alphanumeric LED display driver circuit board with microcontroller builds on the applied bred led display 74HC238, 74HC238 is driven by com also has a connection with max233 pcb printed circuit drawing in addition to the (eagle) there. PIC Software HiTech PICC compiler written in VHDL source code are in addition PALCE16V8. Sisis supply LM2940 regulator in there. Circuit with 9v battery can run.
PICmicro Alphanumeric Display Driver
The display pictured below is driven by a PIC microcontroller programmed to interface 15 segment LED displays.
LED displays on Digikey for fun but soon realized I’d need a driver chip to make use of them. Maxim offers many nice drivers for matrix displays and 7 segment displays, but if you need a custom driver for a random display (such as the 15 segment displays I bought) you may have to design your own. It’s not difficult, and here you can find some code to work with the PIC series microcontrollers using interrupts.
Source: goo.gl/0GjtD Alphanumeric Display Drivers hi tech c source code schematic pcb alternative link: alphanumeric-display-drivers-circuit-with-pic16f874-hi-tech-c.rar