Happy Birthday - Binary Art Greeting Card This card spells out Happy Birthday in Binary code £3.95 This fabulous card has been laser printed on high quality 250gsm white cardstock. Suitable for the geek in your life, or for anyone else who appreciates this sort of thing (translation on the back!). Provided with matching envelope, this card is 5x5 inches in size. Note: These cards are shipped in a protective cellophane wrapper, and in a board backed envelope, to ensure they arrive in perfect condition. These cards are available in other designs - please check my other listings or contact me to discuss a custom order. Also available as framed wall art.