My Favourite Hexadecimal Numbers

My Favourite Hexadecimal Numbers: A Dictionary

"We really are that childish."

Programmers have spent decades noticing that hexadecimal's six letters, A to F, spell things. C0FFEE. FACADE. DECAF. B00B5. We stopped noticing and started collecting.

This is a real dictionary of 1,775 words that are secretly numbers, each with its value in hex, decimal and binary, a star rating, and an original definition written with a childish smirk. We have deliberately left out the English words, so working out that C0CC1D105E5 is a real word is half the fun.

Inside:

• The Dictionary: 1,775 hex words, rated from ★ to ★★★★★ (long words with digits in disguise score highest)
• The Hall of Fame: the hex that made it into real computers, from DEADBEEF and CAFEBABE to the B16B00B5 incident
• The Quiz: 100 questions, a definition and a binary string each. Decode, then name the word.
• Hex Search: a 16×16 word search laid out like a memory dump
• Colour Codes: every six-digit hex word is secretly a web colour, so match #C0FFEE to its swatch
• FACE0FF5: a complete word-tile game for 2 to 4 players, with rules and 112 printable tiles. First to 0x10 wins.
• All answers printed upside down at the back, where they belong
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Perfect for: programmers, maths teachers, computing students, puzzle lovers, and anyone who has ever giggled at a memory address.

Teachers, take note: buying this book gives the purchaser a licence to print and photocopy the puzzles and the HEXABBLE tiles as often as they like for their own classes, students and family.

Format: PDF, 258 pages, 6 × 9 inches, with clickable contents. One page is in full colour. Each copy is personalised to its purchaser.