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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 · 629 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.