MICROPROCESSOR & DIGITAL ELECTRONICS LABORATORY

It is one of the core laboratories to acquire knowledge of Digital System design for the students of the ECE department. According to the syllabus prescribed by BOS, ECE of HIT, 3rd semester students design different logical, combinational and sequential circuits and observe their results. They gather knowledge by the various method of designing a circuit. They can compare resemble of a circuit with constructed truth table. Ten numbers of equal timing slots in a week are available where 40 students can perform experiment at a time with 20 no of experimental setup in equal batch sizes. In 4th semester students of the department of ECE perform various programming experiments upon 8085, 8086 microprocessor and 8051 microcontrollers. Several no of faculties and instructors/demonstrators associated with this lab continuously look over to assist students with full enthusiasm.

Name of Important Equipments

1. Digital Logic Design Trainer Kit - 32 Nos
2. Digital IC Tester - 1 No
3. 8085 Microprocessor Kit - 18 Nos
4. 8086 Microprocessor Kit - 6 Nos
5. 8051 Microcontroller Kit - 2 Nos

List of Experiments

List of Experiments for Digital Electronics Lab: EC-392

1. Realization of basic logic functions using Universal logic gates.
2. Code conversion circuits-BCD to Excess-3 & Vice Versa.
3. Construction of simple decoder & multiplexer circuits using logic gates.
4. 4-bit parity generator & comparator circuits.
5. Design of combinational circuits for BCD to decimal conversion to drive a 7-segment display using a multiplexer.
6. Construction of 2:4 decoder and 4:1 multiplexer using suitable gates.
7. Construction of simple arithmetic circuits- adder, subtractor using logic gates.
8. Realization of RS-JK & D flip flops using universal logic gates.
9. Realization of universal register using logic gates, JK flip-flops & multiplexer.
10. Realization of Synchronous/ Asynchronous Up/Down counter

Microprocessors and Microcontrollers Lab: EC-493

1. Introduction to 8085 microprocessor kit with assembly language program for swapping of data between two memories, exchanging the data between two blocks of memories, and copying a block of data.
2. Assembly language program for adding two 8-bit data, addition of two 16-bit data, addition of two BCD numbers, subtraction of two 8-bit data using 1's and 2's complement.
3. Assembly language program for multiplication of two 8-bit data, division of two 8-bit data, mask off, and split up.
4. Assembly language program for searching the largest and smallest number from a block of data, sorting in ascending and descending order of a block of data.
5. Assembly language program for addition of two 16 bit data, subtraction of two 16 bit data and multiplication of two 16 bit data in 8086 microprocessor kit.
6. Assembly language program to find the smallest word in an array, find the number of positive and negative data in an array, BCD to binary conversion.
7. Assembly language program for addition of three 8 bit numbers, addition of two BCD numbers, addition of two 16 bit numbers, finding a largest number in a block of data using 8051 microcontroller.
8. Interface a seven segment display with 8051 microcontroller using 74LS240 IC and write the assembly language program.

Safety Measures

• In case of fire, use the nearest available fire extinguisher.
• If the power cannot be turned off, use only one hand when working on it. This will prevent a circuit from going through your heart, which could be potentially fatal.
• Internal energy storage devices such as capacitors must be discharged.
• Never change wiring with the circuit plugged into the power source.
• Never plug leads into the power source unless they are connected to an established circuit.
• Avoid contacting circuits with wet hands or wet materials.
• If overheating is observed in any of the ICs, turn off the power supply immediately.
• Check circuits for proper grounding with respect to the power source.
• Do not use highly flammable liquids near electrical equipment.
• Do not bring any edibles to the lab.