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Origin of modern calculating machines ⠃⠗⠋ braille edition

Grade 2 — contracted English braille (EBAE-compatible subset). Translated on this server by our own braille engine (BRF — Braille Ready Format, Library of Congress fdd000551). View Grade 1 instead.

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

195,804 braille cells · 202 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.