The exhaustive list of topics in Digital Circuits in which we provide Help with Homework Assignments and Help with Projects is as follows:
- Number Systems and Codes: Positional number system; Binary, octal and hexadecimal number systems; Methods of base conversions; Binary, octal and hexadecimal arithmetic; Representation of signed numbers; Fixed and floating point numbers; Binary coded decimal codes; Gray codes; Error detection and correction codes - parity check codes and Hamming code.
- Combinatorial Logic Systems: Truth table; Basic logic operation and logic gates.
- Boolean Algebra and Switching Functions: Standard representation of logic functions - SOP and POS forms; Simplification of switching functions - K-map and Quine-McCluskey tabular methods; Synthesis of combinational logic circuits.
- Logic families: Operational characteristics of BJT in saturation and cut-off regions; Operational characteristics of MOSFET as switch; TTL inverter - circuit description and operation; CMOS inverter - circuit description and operation; Structure and operations of TTL and CMOS gates; Electrical characteristics of logic gates – logic levels and noise margins, fan-out, propagation delay, transition time, power consumption and power-delay product.
- Combinational Logic Modules and their applications: Decoders, encoders, multiplexers, demultiplexers and their applications; Parity circuits and comparators; Arithmetic modules- adders, subtractors and ALU.
- Sequential Logic systems: sequential circuits- latches and flip-flops: SR-latch, D-latch, D flip-flop, JK flip-flop, T flip-flop; Timing hazards and races; Analysis of state machines using D flip-flops and JK flip-flops; Design of state machines - state table, state assignment.
- State machine design approach: Designing state machine using ASM charts; Designing state machine using state diagram
- Sequential logic modules and their applications: Multi-bit latches and registers, counters, shift register, application examples.
- Memory: Read-only memory, read/write memory - SRAM and DRAM
- Programmable Logic Devices: PLAs, PALs and their applications; Sequential PLDs and their applications; State-machine design with sequential PLDs; Introduction to field programmable gate arrays (FPGAs)