Computer Keyboard Shortcut Keys In modern times, there is no confusion in saying that computers have become a very useful part of daily life. If you use the computer frequently, you must have knowledge about the computer shortcut keys. Computer shortcut keys provide...
Part 10: Computer Fundamentals Virus
Computer Virus Computer viruses are unwanted software programs or pieces of code that interfere with the functioning of the computer. They spread through contaminated files, data, and insecure networks. Once it enters your system, it can replicate to produce copies of...
Part 8: Computer Fundamentals Number System
Number System When we type some letters or words, the computer translates them in numbers as computers can understand only numbers. A computer can understand the positional number system where there are only a few symbols called digits and these symbols represent...
Part 6: Computer Fundamentals Memory
Computer Fundamentals Memory A memory is just like a human brain. It is used to store data and instructions. Computer memory is the storage space in the computer, where data is to be processed and instructions required for processing are stored. The memory is divided...
Part 4: Computer Fundamentals Output Components
Output Devices The output device displays the result of the processing of raw data that is entered in the computer through an input device. There are a number of output devices that display output in different ways such as text, images, hard copies, and audio or...
Part 2: Computer Fundamentals Applications
Business A computer has high speed of calculation, diligence, accuracy, reliability, or versatility which has made it an integrated part in all business organizations. Computer is used in business organizations for − Payroll calculations Budgeting Sales analysis...
Part 11: Computer Fundamentals Internet Intranet Website
Internet Internet is a global network that connects billions of computers across the world with each other and to the World Wide Web. It uses standard internet protocol suite (TCP/IP) to connect billions of computer users worldwide. It is set up by using cables such...
Part 9: Data and Information OS and Network
Data can be defined as a representation of facts, concepts, or instructions in a formalized manner, which should be suitable for communication, interpretation, or processing by human or electronic machine. Data is represented with the help of characters such as...
Part 7: Computer Fundamentals Software
Software Software, which is abbreviated as SW or S/W, is a set of programs that enables the hardware to perform a specific task. All the programs that run the computer are software. The software can be of three types: system software, application software, and...
Part 5: Computer Fundamentals CPU(Central Processing Unit)
Central Processing Unit (CPU) consists of the following features − CPU is considered as the brain of the computer. CPU performs all types of data processing operations. It stores data, intermediate results, and instructions (program). It controls the operation of all...
Part 3: Computer Fundamentals Input Components
Components All types of computers follow the same basic logical structure and perform the following five basic operations for converting raw input data into information useful to their users. S.No. Operation Description 1 Take Input The process of entering data and...
Part 1: Computer Fundamentals Basics
Computer Fundamentals Computer is an advanced electronic device that takes raw data as an input from the user and processes it under the control of a set of instructions (called program), produces a result (output), and saves it for future use. This tutorial explains...
Chapter 4 Relational Algebra
Relational Algebra The part of mathematics in which letters and other general symbols are used to represent numbers and quantities in formula and equations. Ex: (x + y) · z = (x · z) + (y · z). The main application of relational algebra is providing a theoretical...
Chapter 3 Components of the Database System Environment
Components of the Database System Environment There are five major components in the database system environment and their interrelationships are. Hardware Software Data Users Procedures Hardware: The hardware is the actual computer system used for keeping and...
Database basic overview
What is DBMS? A Database Management System (DBMS) is a collection of interrelated data and a set of programs to access those data. Database management systems (DBMS) are computer software applications that interact with the user, other applications, and the database...
Laravel – Scopes (3 Easy Steps)
Scoping is one of the superpowers that eloquent grants to developers when querying a model. Scopes allow developers to add constraints to queries for a given model. In simple terms laravel scope is just a query, a query to make the code shorter and faster. We can...