Essential Java Enterprise Development Concepts

Posted by on May 15, 2026 in Computers | 0 comments

1. Object Relational Mapping (ORM)

ORM is a technique used to map Java objects to database tables. It allows developers to interact with databases using objects instead of raw SQL queries. Example: Hibernate is a popular ORM framework.

Advantages of ORM

  • Reduced SQL Coding: Uses an object-oriented approach.
  • Improved Productivity: Faster development with less code.
  • Database Independence: Code works across different databases with minimal configuration changes.
  • Maintainability: Clean, manageable code.

2.

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PIC Microcontroller C Programming Examples

Posted by on May 15, 2026 in Computers | 0 comments

Practical 1: LED Blinking Patterns

#include <xc.h>
#define _XTAL_FREQ 20000000

#pragma config FOSC = HS, WDTE = OFF, PWRTE = ON, LVP = OFF

void delay_ms(unsigned int time) {
    while(time--) __delay_ms(1);
}

void main(void) {
    ANSEL = 0x00; ANSELH = 0x00;
    TRISB = 0x00; PORTB = 0x00;
    while(1) {
        PORTB = 0xFF; delay_ms(500);
        PORTB = 0x00; delay_ms(500);
        PORTB = 0xAA; delay_ms(500);
        PORTB = 0x55; delay_ms(500);
    }
}

Practical 2: DC Motor Control

#
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Python Programming Fundamentals and Practical Exercises

Posted by on May 14, 2026 in Computers | 0 comments

Lecture 1: Program Design

Flowchart and Pseudocode

  • Pseudocode: Abbreviated plain English version of actual computer code.
  • Symbols used in flowcharts are replaced by English-like statements.
  • Allows the programmer to focus on the steps required to solve a problem.

Hierarchy Chart

  • Shows the overall program structure.
  • Depicts the organization of the program, omitting specific processing logic.
  • Describes what each part, or module, of the program does.
  • Each module is subdivided into a succession of submodules.
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Public synchronized int incContador (int val)

Posted by on May 13, 2026 in Computers | 0 comments

1

# Hw *8
addition = float(input(“Enter the annual addition of public residential land (in sq land):”))
years = 0 
current_total = initial_total 
while current_total < target_total:
    years += 1 
    private_residential = private_residential*1.03
    public_residential = public_residential + addition 
    current_total = private_residential + public_residential + rurual_settlement 

print(f”It will take at least {years} year(s) for the residential land in Hong Kong to double in size.”)

#cw

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Essential Concepts in Big Data, AI, and Data Warehousing

Posted by on May 12, 2026 in Computers | 0 comments

Understanding RDD and Spark Operations

RDD (Resilient Distributed Dataset) is the fundamental data structure of Apache Spark. It is a fault-tolerant collection of elements distributed across multiple nodes in a cluster, designed for parallel processing.

Key Features of RDD

  • Distributed: Data is split across multiple machines.
  • Immutable: Once created, it cannot be changed.
  • Fault-tolerant: Lost data can be recomputed using lineage.
  • Lazy evaluation: Operations are executed only when needed.

RDD Operations

RDD

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Data Link Layer Protocols and Switching Fundamentals

Posted by on May 6, 2026 in Computers | 0 comments

1. Elementary Data Link Protocols

Elementary Data Link Protocols are basic communication protocols used at the Data Link Layer of the OSI Model. They explain how data is transmitted between two devices and introduce concepts like flow control and error control in a simple way.

Types of Elementary Data Link Protocols

1. Unrestricted Simplex Protocol

  • Communication is one-way (simplex).
  • Sender continuously sends frames without waiting.
  • No error control or flow control.
  • Assumes receiver can handle all incoming
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