stld test

 Decimal, Binary, Octal and Hexadecimal Number systems, Codes- BCD, Gray Code, Excess-3 Code, ASCII, EBCDIC, Conversion between various Codes. Switching Theory: - Boolean Algebra- Postulates and Theorems, De’ Morgan’s Theorem, Switching FunctionsCanonical Forms- Simplification of Switching Functions- Karnaugh Map and Quine Mc-Clusky Methods. Combinational Logic Circuits:- Review of basic gates- Universal gates, Adder, Subtractor ,Serial Adder, Parallel Adder- Carry Propagate Adder, Carry Look-ahead Adder, Carry Save Adder

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