Digital system design is process of designing or developing systems which represent information using a binary system. It’s easier to store, reproduce, transmit & manipulate digital data & cheaper/easier to design such systems.

1. Number Systems & Codes

  1. Decimal
  2. Binary
  3. Hexadecimal
  4. Octal systems
  5. Interconversions
  6. Signed & Unsigned Binary numbers
  7. Complements
  8. Binary Arithmetic: Addition & Subtraction using 1’s & 2’s complements

2. Binary Codes

  1. s-Decimal codes (BCD, Excess-3, 8421, 2421), Error Detection codes (Parity generation & Detection), Reflected code, Alphanumeric codes (EBCDIC, ASCII), Study of Binary logic with logic gates.

3. Boolean Algebra

  1. Postulates & Theorems, Boolean functions and their Algebraic manipulation, Canonical & Standard forms, Minterms & Maxterms. Simplification of Boolean functions: K-maps, POS & SOP simplification and their inter conversions, NAND & NOR implementation, Plotting & Reading of K-map using VEM.

4. Combinational Logic

  1. Design Procedure for Combinational logic circuits, Design & Analysis of Half Adder, Full Adder, Subtractor, Code Conversion, binary Parallel Adder, Look-ahead Carry generator, Decimal Adder (BCD Adder), Magnitude Comparator, Decoders, Combinational logic implementation, Demultiplexers, Encoders, Multiplexers, Boolean function implementation with multiplexers. Design of Seven-segment display, Parity generator, checker.

5. Flip-flops

  1. Basic flip-flop circuit, Clocked RS flip-flop, D flip-flop, JK flip-flop, T flip-flop, Triggering of flip-flops, Master Slave flip-flop, Edge triggered flip-flops: their schematic symbols, truth table & Excitation table, conversion between different types of flip flops

6. Sequential Circuits

  1. Design procedure for sequential circuits using state diagrams, state table, state equations, state reduction and assignment, Circuit implementation, Moore & Mealy Machine. Finite state machine. Design and analysis of counters, Modulo Counters, Synchronous, Ripple and ring counters (Switch tail, Johnson), Application of counters, Timing Sequences, Word time generation, timing

7. Registers

  1. SISO, SIPO, PISO, PIPO, Register with parallel load, Shift registers, Universal shift register.

8. Design of Arithmetic circuits

  1. Adders: Carry Save, Carry Look Ahead, Carry Select Adder delta delay. Multipliers: Wallace Tree, Braun Multiplier, Restoring and Non Restoring Dividers.

9. Digital Logic Families

  1. Characteristics of Digital ICs, TTL-Operation of TTL NAND gate, Active pull-up, Open Collector output, Wired AND, three state (or tri-state) output, Schottky TTL, ECL. Characteristics of MOSFET’s, CMOS Inverter, NAND and NOR, CMOS to TTL and TTL to CMOS interfacing.