Digital Electronics

Number systems, Binary, Octal, Hexadecimal, Conversion methods. Binary addition, Subtraction 1's complement method.Concept of coding, BCD codes, 8421, EXCESS-3, Grey code, Codes with more than four bits, ASCII codes.Error Detecting and Correcting Codes : Parity bits, Matrix representation of linear-block codes and its capabilities, Hamming code, Binary cyclic code, Burst code.De-Morgan theorem, Canonical and standard forms, Dependency notation, Minimization of logic functions, Karnaugh maps upto 4 variables, SOP and POS forms, Don't care conditions, Quine MC-Clusky method upto 4 variables, Multiple output minimization.Logic Families : TTL NAND gate, Specifications, Tristate TTL, Bus organised computer principle, ECL, MOS, CMOS families and their interfacing.Combinational Logic : Code conversion, Arithmetic circuits, Half and full adder and subtractor, Binary serial and parallel adder, IC 7483, BCD adder, Excess-3 adder, Digital comparator.Multiplexer, Demultiplexer, Encoder, Decoder and their applications, Design of ALU.Sequential Logic Circuits : S-R, Clocked S-R, JK and Master-Slave JK flip-flops, Flip-Flop conversion, Edge triggered flip-flops, Design of Algorithmic State Machines (ASM) for simple applications. Design of ripple and synchronous counters, Shift register and pulse train generator, Pseudo Random Binary Sequencing (PRBS) generator.Analysis of clocked sequential circuits.Semiconductor Memories : RAM, ROM, PROM, EPROM, EEPROM, NVRAM, SRAM, DRAM; Concept of PLA, PAL.