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Library / Engineering & Technology / Origin of modern calculating machines / Braille

Origin of modern calculating machines ⠃⠗⠋ braille edition

Grade 1 — uncontracted, letter-for-letter. Translated on this server by our own braille engine (BRF — Braille Ready Format, Library of Congress fdd000551). View Grade 2 instead.

Download .brf — Grade 2 Download .brf — Grade 1 Plain-text reader .txt

236,017 braille cells · 247 embossed pages at 40×25 · 913 unrepresentable characters omitted

⠞⠓⠑⠗⠑⠀⠁⠗⠑⠀⠧⠑⠗⠽⠀⠋⠑⠺⠀⠺⠓⠕⠀⠁⠗⠑⠀⠋⠁⠍⠊⠇⠊⠁⠗⠀⠺⠊⠞⠓
⠀⠞⠓⠑⠀⠞⠗⠥⠑⠀⠓⠊⠎⠞⠕⠗⠽⠀⠕⠋⠀⠞⠓⠑⠀⠍⠕⠙⠑⠗⠝⠀⠀
⠁⠉⠉⠕⠥⠝⠞⠊⠝⠛⠀⠍⠁⠉⠓⠊⠝⠑⠲⠀⠀⠀⠀⠠⠎⠊⠙⠑⠝⠕⠞⠑⠒⠀
⠠⠛⠑⠝⠑⠗⠁⠇⠀⠅⠝⠕⠺⠇⠑⠙⠛⠑⠀⠇⠁⠉⠅⠊⠝⠛⠀⠀⠀⠀⠠⠁⠗⠞⠊⠉⠇⠑⠎⠀
⠺⠗⠊⠞⠞⠑⠝⠀⠃⠽⠀⠞⠓⠕⠎⠑⠀⠝⠕⠞⠀⠋⠁⠍⠊⠇⠊⠁⠗⠀⠺⠊⠞⠓⠀⠞⠓⠑⠀
⠞⠗⠥⠑⠀⠋⠁⠉⠞⠎⠀⠗⠑⠇⠁⠞⠊⠧⠑⠀⠞⠕⠀⠀⠞⠓⠑⠀⠁⠗⠞⠀⠕⠋⠀
⠁⠉⠉⠕⠥⠝⠞⠊⠝⠛⠀⠍⠁⠉⠓⠊⠝⠑⠎⠀⠓⠁⠧⠑⠀⠺⠗⠕⠥⠛⠓⠞⠀
⠉⠕⠝⠋⠥⠎⠊⠕⠝⠲⠀⠠⠞⠓⠑⠊⠗⠀⠑⠗⠗⠕⠗⠎⠀⠀⠓⠁⠧⠑⠀⠃⠑⠑⠝⠀
⠉⠕⠏⠊⠑⠙⠀⠁⠝⠙⠀⠝⠑⠺⠀⠑⠗⠗⠕⠗⠎⠀⠁⠙⠙⠑⠙⠂⠀⠞⠓⠥⠎⠀
⠊⠝⠉⠗⠑⠁⠎⠊⠝⠛⠀⠞⠓⠑⠀⠉⠕⠝⠋⠥⠎⠊⠕⠝⠲⠀⠀⠠⠁⠛⠁⠊⠝⠂⠀
⠉⠇⠁⠊⠍⠎⠀⠍⠁⠙⠑⠀⠊⠝⠀⠞⠗⠁⠙⠑⠀⠁⠙⠧⠑⠗⠞⠊⠎⠑⠍⠑⠝⠞⠎⠀⠁⠝⠙⠀
⠃⠕⠕⠅⠇⠑⠞⠎⠀⠁⠗⠑⠀⠍⠊⠎⠇⠑⠁⠙⠊⠝⠛⠂⠀⠀⠺⠊⠞⠓⠀⠞⠓⠑⠀
⠗⠑⠎⠥⠇⠞⠀⠞⠓⠁⠞⠀⠞⠓⠑⠀⠞⠗⠥⠞⠓⠀⠊⠎⠀⠃⠥⠞⠀⠇⠊⠞⠞⠇⠑⠀
⠅⠝⠕⠺⠝⠲⠀⠀⠀⠀⠠⠞⠓⠑⠎⠑⠀⠋⠁⠉⠞⠎⠂⠀⠁⠝⠙⠀⠞⠓⠑⠀
⠏⠎⠽⠉⠓⠕⠇⠕⠛⠊⠉⠁⠇⠀⠑⠋⠋⠑⠉⠞⠀⠕⠋⠀⠎⠑⠑⠊⠝⠛⠀⠁⠀⠉⠑⠗⠞⠁⠊⠝
⠀⠞⠽⠏⠑⠀⠕⠋⠀⠀⠍⠁⠉⠓⠊⠝⠑⠀⠊⠝⠀⠞⠓⠑⠀⠃⠁⠝⠅⠀⠺⠕⠥⠇⠙⠀⠇⠑⠁⠙
⠀⠞⠓⠑⠀⠁⠧⠑⠗⠁⠛⠑⠀⠍⠁⠝⠀⠞⠕⠀⠃⠑⠇⠊⠑⠧⠑⠀⠞⠓⠁⠞⠀⠞⠓⠑⠀⠀
⠗⠑⠉⠕⠗⠙⠊⠝⠛⠤⠁⠙⠙⠊⠝⠛⠀⠍⠁⠉⠓⠊⠝⠑⠀⠺⠁⠎⠀⠞⠓⠑⠀⠕⠝⠇⠽⠀
⠏⠗⠁⠉⠞⠊⠉⠁⠇⠀⠍⠁⠉⠓⠊⠝⠑⠆⠀⠁⠝⠙⠀⠁⠇⠎⠕⠀⠶⠁⠎⠀⠀⠎⠕⠍⠑⠕⠝⠑
⠀⠎⠞⠁⠞⠑⠙⠀⠊⠝⠀⠞⠓⠑⠀⠠⠙⠑⠉⠑⠍⠃⠑⠗⠂⠀⠼⠁⠊⠁⠑⠂⠀⠊⠎⠎⠥⠑⠀
⠕⠋⠀⠞⠓⠑⠀⠠⠛⠑⠕⠛⠗⠁⠏⠓⠊⠉⠀⠠⠍⠁⠛⠁⠵⠊⠝⠑⠶⠀⠀⠞⠓⠁⠞⠀
⠠⠃⠥⠗⠗⠕⠥⠛⠓⠎⠀⠺⠁⠎⠀⠞⠓⠑⠀⠊⠝⠧⠑⠝⠞⠕⠗⠀⠕⠋⠀⠞⠓⠑⠀
⠗⠑⠉⠕⠗⠙⠊⠝⠛⠤⠁⠙⠙⠊⠝⠛⠀⠍⠁⠉⠓⠊⠝⠑⠲⠀⠀⠀⠀⠠⠁⠇⠞⠓⠕⠥⠛⠓⠀
⠞⠓⠑⠀⠓⠊⠎⠞⠕⠗⠽⠀⠕⠋⠀⠁⠉⠉⠕⠥⠝⠞⠊⠝⠛⠀⠍⠁⠉⠓⠊⠝⠑⠎⠀⠙⠁⠞⠑⠎
⠀⠺⠁⠽⠀⠃⠁⠉⠅⠀⠊⠝⠞⠕⠀⠀⠞⠓⠑⠀⠞⠑⠝⠞⠓⠀⠉⠑⠝⠞⠥⠗⠽⠂⠀⠞⠓⠑⠀

These are the same pages the .brf download embosses — form-feed breaks and all. BRF opens in braille software (Duxbury, BrailleBlaster), on embossers, and on refreshable displays.