Computer Engineering Archives - Page 3 of 29 - Student Notes

Essential Concepts in Computer Networking and Internet Security

Posted by admin on Jan 30, 2026 in Computer Engineering | 0 comments

1. Transmission Media Pathways

Transmission media refers to the physical or wireless pathways through which data travels from one device to another in a network. It plays a crucial role in determining the speed, quality, and reliability of communication. Transmission media is broadly classified into two types:

Guided Media: Includes physical cables like twisted pair, coaxial cable, and optical fiber, where signals travel through a fixed physical path. Optical fiber offers the highest bandwidth and

Manual DFT and IDFT Implementation in MATLAB/Octave

Posted by admin on Jan 29, 2026 in Computer Engineering | 0 comments

Implementing DFT and IDFT Manually in MATLAB/Octave

This document provides the complete MATLAB/Octave code for generating a sinusoidal signal, calculating its Discrete Fourier Transform (DFT) manually, and then reconstructing the original signal using the Inverse Discrete Fourier Transform (IDFT).

1. Signal Setup and Initialization

We begin by clearing the workspace and defining the time vector and the sinusoidal signal. The code uses 1-based indexing typical of MATLAB/Octave.

clear all;
clc;
close

Data Structures and Algorithms C Implementation

Posted by admin on Jan 29, 2026 in Computer Engineering | 0 comments

Counting Nodes in a Singly Linked List

int count(struct node *p) {
    int c = 0;
    while(p) {
        c++;
        p = p->next;
    }
    return c;
}

Postfix Expression Evaluation

Given values: A=2, B=10, C=4, D=1

i) AB–CD*

Substitute: 2 10 – 4 1 *
Step 1: 2 – 10 = –8
Step 2: 4 * 1 = 4
Final Result: –4

ii) ABC–*

Substitute: 2 10 4 – *
Step 1: 10 – 4 = 6
Step 2: 2 * 6 = 12
Final Result: 12

Graph Theory Definitions

Bridge: An edge whose removal increases the number of connected components.
Cyclic

Neural Network Architectures and Learning Concepts

Posted by admin on Jan 27, 2026 in Computer Engineering | 0 comments

Feedforward Neural Network (FNN)

A Feedforward Neural Network is the simplest type of artificial neural network in which information flows in only one direction, from the input layer to the output layer. There are no feedback connections or loops.

Basic Structure

Consists of an input layer, one or more hidden layers, & an output layer.
Data flows from input → hidden → output.

Single-layer Feedforward Network

Has an input layer & an output layer only. The output layer performs the main computation

Data Visualization Principles and Web Implementation

Posted by admin on Jan 26, 2026 in Computer Engineering | 0 comments

Visualization Fundamentals

The ability to analyze data, process it, extract value, visualize it, and communicate it is an extremely important skill, given the ubiquitous availability of data today. The primary goals of visualization include:

Recording information.
Analyzing data to support reasoning, such as confirming hypotheses (e.g., John Snow’s work during the London Cholera Outbreak in 1854).
Communicating ideas to others.

Visualization functions effectively by addressing the fundamental limitations

Data Structures and Algorithms Concepts Explained