five doubling cards build every number from 0 to 31 — exactly the way every computer counts
Built as a memo rather than a table: the thing worth hanging it up for reads across the room, with the full reference in smaller type below it.
Three sizes in one archive — from a sheet on the fridge to a poster on the wall.
The cards are worth 16, 8, 4, 2 and 1; a filled circle means the card is on and its weight is added. The dots on the cards are real: they can be counted.
One hand can count all the way to 31: each finger is one card, and a raised finger says: add me. All five fingers up isn't five — it's 16 + 8 + 4 + 2 + 1 = 31.
And both hands reach 1023 — because every new finger doesn't add one, it doubles the limit.
Why the numbers can be trusted. Every countable number here is computed from data rather than typed in, and the sheet must pass 7 independent checks before it is allowed to build — how many items there are, the order they come in, and the claim in the highlighted box itself. If one fails, there is no file.
ten tasks, the year of each, the system, the figure — and the human it was measured against
all 128 positions: the column is the three high bits, the row is the four low ones
who published each standard, when, what it does to the sound, and how many bits per second it allows
forty bits to a quantum: five bytes, eight characters and five padding cases