This historical text devotes itself to codes and code language, as opposed to ciphers and ciphertext. Text includes definitions, origin of codes and their introduction into telegraphy, origin of the principle of the two- letter differential, birth of the five-letter codes, code language regulations and cryptographic apparatus.
發表於2024-12-29
History of the Use of Codes 2024 pdf epub mobi 電子書 下載
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History of the Use of Codes 2024 pdf epub mobi 電子書 下載