Computers Archives - Student Notes

Core C Language Fundamentals and Practical Programs

Posted by admin on Aug 6, 2026 in Computers | 0 comments

C Program to Find the Largest of Three Numbers

#include <stdio.h>
int main() {
    int a, b, c;
    printf("Enter three numbers: ");
    scanf("%d %d %d", &a, &b, &c);
    if (a >= b && a >= c) {
        printf("%d is the largest.\n", a);
    } else if (b >= a && b >= c) {
        printf("%d is the largest.\n", b);
    } else {
        printf("%d is the largest.\n", c);
    }
    return 0;
}

C Program to Check Positive, Negative, or Zero

#include <stdio.

Computer Networking and Architecture Fundamentals

Posted by admin on Jul 22, 2026 in Computers | 0 comments

Data Transmission and Networking

What is a packet?

A packet is a small unit of data sent across a network. Large files are divided into packets so they can be transmitted more efficiently.

What is a header?

A header is part of a packet. It contains the destination address and sequencing information so the packet reaches the correct device.

What is a payload?

A payload is the part of a packet that contains the actual data being sent.

What is a trailer?

A trailer is the last part of a packet. It contains

Digital Forensics: Image, Network, and Cloud Analysis

Posted by admin on Jul 22, 2026 in Computers | 0 comments

Digital Image Forensics

Raw Image File: An unprocessed image format from high-end cameras. It is proprietary and preserves the most complete sensor data. Demosaicing is the process of converting raw sensor data into a standard, viewable image format.

Metadata and File Structure:

EXIF Data: Stores metadata like camera make, model, and serial number.
File Header: The beginning portion of a file containing hexadecimal values (e.g., JPEG is FFD8).
Bitmap Files: Store graphic information as a grid of individual

Database Transactions, ACID Properties, and Deadlocks

Posted by admin on Jun 27, 2026 in Computers | 0 comments

Transaction and ACID Properties (8 Marks)

A transaction is a sequence of database operations that performs a single logical unit of work. A transaction may consist of one or more SQL statements such as INSERT, UPDATE, DELETE, and SELECT.

A transaction must be completed entirely; otherwise, all changes made by it are cancelled.

Example: Bank Fund Transfer

Debit ₹1000 from Account A.
Credit ₹1000 to Account B.

Both operations together form a transaction. If one operation fails, the entire transaction

Core Java Fundamentals: Key Concepts and Definitions

Posted by admin on Jun 26, 2026 in Computers | 0 comments

1. The Role of the JVM

The JVM (Java Virtual Machine) is an engine that provides a runtime environment to drive Java code. It converts Java bytecode into machine-specific instructions, enabling Java’s “write once, run anywhere” platform independence.

2. Primitive Data Types

Primitive data types are the most basic, built-in types in Java that hold pure, simple values rather than objects. Examples include:

int: For integers.
boolean: For true/false values.

3. == Operator vs. equals() Method

==: Compares

Essential Bash Scripting Examples for Linux Users

Posted by admin on Jun 23, 2026 in Computers | 0 comments

1. Prime Numbers

This program finds the prime numbers between two input numbers (M < N).

#!/bin/bash

echo "Program to find the prime numbers between two input numbers (M < N)"
echo

echo "Enter the value of M:"
read M

echo "Enter the value of N:"
read N

# Validate input
if [ $M -lt 2 ]
then
    M=2
fi

echo "Prime numbers between $M and $N are:"

for ((num=M; num<=N; num++))
do
    is_prime=1

    for ((i=2; i*i<=num; i++))
    do
        if (( num % i == 0 ))
        then

« Older Entries