Digital usually refers to something using digits, particularly binary digits.
View More On Wikipedia.org
VISM by NcStar Tactical Rifle Scabbard, Digital Camo - $24.88 + Free Shipping
Sightmark Photon XT 4.6x42S Digital Night Vision Riflescope - $359.99 shipped after $20 off at checkout
FoxPro Model 416B Digital Predator Call
Remote control up to 200 yds
External speaker jack
External audio jack (for plugging in IPod)...
Separate names with a comma.