The Electromagnetic Telegraph A technical history of the 19th-century electromagnetic telegraph, with special reference to the origin and variey of the alphabets, or codes, that were used. Gearchiveerd op 27 augustus 2021.
The Electromagnetic Telegraph A technical history of the 19th-century electromagnetic telegraph, with special reference to the origin and variey of the alphabets, or codes, that were used. Gearchiveerd op 27 augustus 2021.
Vertaald uit: Electronic Communications Policy, University of California, Office of the President, Issued November 17, 2000, Revised August 18, 2005 Appendix A: Definitions
