===== Mechanical Devices ===== ==== Mechanical Calculator ==== (1645) Requires Mechanical Clock ==== Clockwork Automatons ==== (1737) ==== Automated Machinery ==== (1801) Requires Punched Cards ==== Difference Engine ==== (1847) ==== Analytical Engine ==== (1871) Requires Assembly Language (Analytical Engine), Advanced Metallurgy //Note: This is the same as "Electro-Mechanical Computer." Due to the technological limitations of the time, research is significantly slower than normal. It is not necessary to research this to continue on the computers research path.// ==== Pinwheel Calculator ==== (1872) ==== Differential Analyzer ==== (1876) ==== Census Tabulation Machine ==== (1890) ==== Fire Control System ==== (1916) ==== Mechanical Encryption ==== (1923) Requires Encryption Theory ==== Mechanical Decryption ==== (1938) Requires Decryption Theory ==== Electro-Mechanical Computer ==== (1941) Requires Boolean Algebra, Lambda Calculus, Turing Machine Theory, Telephone Exchange ===== Related Techs ===== ==== Encryption Theory ==== (1457) ==== Binary Numerals ==== (1679) ==== Punched Cards ==== (1801) Requires Printing Press ==== Decryption Theory ==== (1838) ==== Assembly Language (Analytical Engine) ==== (1843) ==== Boolean Algebra (Could be kept in its current location, but I think it works better here. Maybe replace Boolean Algebra w/ Applied Mathematics? ==== (1854) Requires Binary Numerals ==== Lambda Calculus ==== (1933) ==== Turing Machine Theory ==== (1936) ==== Binary Computing ==== (1937) Requires Boolean Algebra, Lambda Calculus ==== High-Level Programming Language ==== (1943) Electromag Computers WIP