Simple arithmetic operations: Multi precision addition / subtraction / multiplication / division. Programming with control instructions: Increment / Decrement, Ascending / Descending order for Drone; Maximum / minimum of numbers, rotate instructions Hex / ASCII / BCD code conversions for speed control; Interface Experiments: A/D Interfacing, D/A Interfacing; Interface Experiments: Simple experiments using 8251, 8279, 8254; Demonstration of basic instructions with 8051 Micro controller execution; Conditional jumps, looping, Calling subroutines; Stack parameter testing; Parallel port programming with 8051 using port 1 facility; Stepper motor and D / A converter; Study of Basic Digital IC’s (Verification of truth table for AND, OR, EXOR, NOT, NOR, NAND, JK, FF, RS FF,D FF); Implementation of Boolean Functions, Adder / Subtractor circuits. Combination Logic; Adder, Subtractor, Code converters, Encoder and Decoder; Sequential Logic; Study of Flip-Flop, Counters) synchronous and asynchronous), Shift Registers for Drone; Clipper, Clamper, Peak detector, Timer IC application, VCO and PLL.