This work represents the path difference-induced optical switching feature of a Mach-Zehnder Interferometer (MZI). These MZIs are experimentally implemented based on silicon photonics. A path length difference (𝚫𝑳) of 236.7 𝝁𝒎 and 409.6 𝝁𝒎 is optimized to achieve the FSR of 2.24 nm and 2.38 nm for the fundamental TE and TM modes, respectively. After careful investigation, the insertion loss of 25.125 dB and 19.359 dB and extinction ratio of 22.075 dB and 24.025 dB are found for TE and TM mode MZIs, respectively. The MZI structure was designed and simulated with Ansys Interconnect and modelled for chip fabrication with KLayout. Then the post-fabrication data was compared, and error analysis was performed via MATLAB. 

This work represents our unique project idea towards developing a voice automated calculator based on speech recognition and cross correlation method. This project has one goal to facilitate people with visual impairment as well as the specially able people. This extraordinary device can enhance technological advancement where humans and computers interact via the voice user interface. For the implementation of the model with MATLAB's help, the cross correlation was employed to make a comparison between two or more signals, and the most accurate one of the all is identified. In this case, cross correlation provides an advantageous opportunity to find similarities between our testing signal files of numerical values, which the user will provide and the recorded signal files. Thus intending to minimize the time and unnecessary efforts needed for performing any mathematical calculation, we were able to develop a model where machines can accurately recognize the numbers and operators provided by the user through voice command and can actively produce a result presented by speech output.

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• Paper Based on The Project

• Flow Chart

• Presentation

We have designed a system that measures the power factor of an AC system having inductive loads and displays it on an LCD. The system then automatically tries to improve the power factor of the system using capacitor banks if the power factor value is found to be less than a preset value. The improvement continues until the power factor is above a predetermined value. This is a simulation-based project and we simulated the system in Proteus using the Arduino module.

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• Circuit Diagram

In this project, we created a calculator with the help of 8051 Microcontroller that can add, subtract, multiply, and divide two inputs (4 digits each i.e. 16 binary bits). The keypad will be used to enter the information, and the result will be presented on the LCD. In the case of subtraction, this calculator can display negative results. MIDE-51 was used to program the software in Assembly language. Proteus was used to test the code before it was implemented in the hardware kit.

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• Circuit Diagram

• Hardware Implementation

There is a necessity of having at least 25% of forest area in a country. But as a result of deforestation  and explosion of our population the country only has around 17.49 % forest . So we proposed a comparatively new technique combined with roof gardening which can be defined as a garden in the roof of the building. In this process a lot of trees can be planted. With this process the overall temperature of the area falls down by 3-4˚C . So, our project is about NARS which is a machine that goes to every plants in the roof, detect them and water them. A fixed time of the day (Example: 4.00 PM) or the number of times needs to water for plants will be set on its program, on this basis it will go to its desired position and water them respectively. After watering is done it will come back to its resting place.

• Presentation

We established a restaurant billing system that uses the Python GUI to make it simple for a restaurant to take orders and generate bills. The system offers an interface that allows users to select various food items as well as the quantity of each item. The system will display the cost for the selected food products at the touch of a button. Customers will also receive token/serial numbers from the system. There's also a calculator to figure exactly how much money the customer will get back.

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In this project, we have implemented 4-bit ALU (arithmetic logic unit) in Proteus using basic logic gates. This ALU can perform addition, subtraction, multiplication, and division operation between two 4-bit inputs.

Initially we have tested the "Adder-Subtractor", "Multiplier" and "Divider" circuits in Proteus. Then we implemented in hardware using PCB and basic logic gate ICs.