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Digital Electronics
NUMBER SYSTEM
BINARY CODES
BOOLEAN ALGEBRA
K MAPS
COMBINATIONAL CKT
INTRODUCTION
ADDER
FULL ADDER(FA)
FA using HAs
BINARY ADDER
SERIAL ADDER
PARALLEL ADDER
CARRY LOOK AHEAD ADDER (CLA)
QUESTION (BCD to Excess-3 using ADDER)
SUBTRACTORS
FULL SUBTRACTOR
FS using HSs
MORE QUESTIONS
SEQUENTIAL CIRCUITS
TIMING CIRCUITS

 

DIGITAL CIRCUITS:

The digital circuits are of 2 types:

  1. Combinational circuits: In this type of circuits, output depends only on present inputs and we don’t need memory element.
  1. Sequential circuits: In this type of circuits output depends on both present inputs and past output hence we need memory elements.

We’ll first study combinational circuits.

Combinational circuits: Combinational circuits consist of input binary variables, logic gates and output binary variables. While considering the design of combinational circuits we need to see that we use minimum number of gates, we have minimum propagation time or delay etc

 

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