3CS3A DIGITAL ELECTRONICS
Unit I
NUMBER SYSTEMS, BASIC LOGIC GATES & BOOLEAN ALGEBRA: Binary
Arithmetic & Radix representation of different numbers. Sign & magnitude
representation, Fixed point representation, complement notation, various codes &
arithmetic in different codes & their inter conversion. Features of logic algebra,
postulates of Boolean algebra. Theorems of Boolean algebra. Boolean function.
Derived logic gates: Exclusive-OR, NAND, NOR gates, their block diagrams and
truth tables. Logic diagrams from Boolean expressions and vica-versa. Converting
logic diagrams to universal logic. Positive, negative and mixed logic. Logic gate
conversion.
Unit II
DIGITAL LOGIC GATE CHARACTERISTICS: TTL logic gate characteristics.
Theory & operation of TTL NAND gate circuitry. Open collector TTL. Three state
output logic. TTL subfamilies. MOS & CMOS logic families. Realization of logic
gates in RTL, DTL, ECL, C-MOS & MOSFET. Interfacing logic families to one
another.
Unit III
MINIMIZATION TECHNIQUES: Minterm, Maxterm, Karnaugh Map, K map upto
4 variables. Simplification of logic functions with K-map, conversion of truth
tables in POS and SOP form. Incomplete specified functions. Variable mapping.
Quinn-Mc Klusky minimization techniques.
Unit IV
COMBINATIONAL SYSTEMS: Combinational logic circuit design, half and full
adder, subtractor. Binary serial and parallel adders. BCD adder. Binary multiplier.
Decoder: Binary to Gray decoder, BCD to decimal, BCD to 7-segment decoder.
Multiplexer, demultiplexer, encoder. Octal to binary, BCD to excess-3 encoder.
Diode switching matrix. Design of logic circuits by multiplexers, encoders, decoders
and demultiplexers.
Unit V
SEQUENTIAL SYSTEMS: Latches, flip-flops, R-S, D, J-K, Master Slave flip
flops. Conversions of flip-flops. Counters : Asynchronous (ripple), synchronous
andsynchronous decade counter, Modulus counter, skipping state counter, counter
design. Ring counter. Counter applications. Registers: buffer register, shift register.
0 comments:
Post a Comment