nkosana
Newbie level 1
Hi,
I'm trying to replace a lost keypad for a scoreboard using four 7-segment display. My circuit uses a PIC16C621A-04P microcontroller. The inputs from the keypad goes to pin 11 of the PIC and also through a 10K resistor to pin 10. The cct also uses a CD4504BE CMOS Hex voltage shifter, MM74C164N shift register, and MC14511BCP decoder/driver. I do not have a cct diagram and not very familiar with encoding ccts. HELP!!
WILL AN EXTERNAL COMPUTER NUMERIC KEYPAD WORK?
I'm trying to replace a lost keypad for a scoreboard using four 7-segment display. My circuit uses a PIC16C621A-04P microcontroller. The inputs from the keypad goes to pin 11 of the PIC and also through a 10K resistor to pin 10. The cct also uses a CD4504BE CMOS Hex voltage shifter, MM74C164N shift register, and MC14511BCP decoder/driver. I do not have a cct diagram and not very familiar with encoding ccts. HELP!!
WILL AN EXTERNAL COMPUTER NUMERIC KEYPAD WORK?