# ECE:213 Digital Electronics End Term Question Paper LPU

ECE:213 End Term Question Paper LPU

### Question Paper : Questio Number 1-20(Mcq),20-25(Subjective)

End of Question Paper
Number Systems : Digital Systems, Data representation and coding, Logic circuits, Implementation of digital systems, Number Systems, Codes- Positional number system, Binary number system, Methods of base conversions, Binary arithmetic, Representation of signed numbers, Fixed numbers, Binary coded decimal codes, Gray codes, Error detection code, Parity check codes, octal number system, Hexadecimal number system, Error correction code, Hamming code, Octal arithmetic, Hexadecimal arithmetic, Floating point numbers Unit II Combinational Logic System : Truth table, Basic logic operation, Boolean Algebra, Basic postulates, Standard representation of logic functions -SOP forms, Simplification of switching functions - K-map, Synthesis of combinational logic circuits, Logic gates, Fundamental theorems of Boolean algebra, Standard representation of logic functions POS forms Unit III Introduction to Combinational Logic Circuits : Adders, Subtractors, Comparators, Multiplexers and Demultiplexers, Decoders, Encoders, Parity circuits Introduction to Logic Families : Introduction to different logic families, Structure and operations of TTL, MOS and CMOS logic families Unit IV Introduction to Sequential Logic Circuits : Basic sequential circuits: SR-latch,Dlatch,D flip-flop,JK flip- flop, T flip-flop, Conversion of basic flip-flops Unit V Sequential Logic Circuits Applications : Registers: Operation of all basic Shift Registers, Counters: Design of Asynchronous and Synchronous counters, Ring counter and Johnson ring counter Unit VI Memory : Read-only memory, read/write memory - SRAM and DRAM, PLAs and their applications, Sequential PLDs and their applications, Introduction to field programmable gate arrays, PALs and their applications Converters : Analog to Digital Converter, Digital to Analog Converter