HOW BOOTING WORKS IN COMPUTER: 1. ** Power On ** When the computer is powered on, it sends power to the central processing unit (CPU) and other essential components. 2. ** Power-On Self-Test (POST) ** The Basic Input/Output System (BIOS) or Unified Extensible Firmware Interface (UEFI) firmware performs a Power-On Self-Test (POST) to check the hardware components like RAM, disk drives, and the graphics card to ensure they are functioning properly. 3. ** BIOS/UEFI Initialization ** The BIOS/UEFI initializes system hardware and configures settings stored in non-volatile memory. It also identifies and initializes system devices such as the keyboard, mouse, and storage devices. 4. ** Bootloader ** After POST, the BIOS/UEFI looks for the bootloader in a specified boot device (usually a hard drive, SSD, or USB drive). The bootloader is a small program responsible for loading the operating system (OS). 5. ** Loading the Bootloader ** The BIOS/UEFI loads the bootloader in...
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Understanding the Logic AND Gate in Computers Logic gates are fundamental building blocks of digital circuits, and among them, the AND gate plays a crucial role in computing processes. Let's dive into how an AND gate works and its significance in computer operations. What is an AND Gate? An AND gate is a digital logic gate that implements logical conjunction – it outputs true (or high) only if all its inputs are true (or high). In simpler terms, an AND gate will output a 1 only when all the inputs are 1. Symbol and Truth Table The AND gate is typically represented by a D-shaped symbol with two or more input lines on the left and one output line on the right. Truth Table: Input A Input B Output 0 0 0 0 1 0 1 0 0 1 1 1 As seen in the truth table, the output is 1 only when both Input A and Input B are 1. How Does It Work in a Computer? AND gates are used in various parts of a computer, from the basic CPU operations to memory and control units. Here's how they function in a few k...
History of C Language History of C language is interesting to know. Here we are going to discuss a brief history of the c language. C programming language was developed in 1972 by Dennis Ritchie at bell laboratories of AT&T (American Telephone & Telegraph), located in the U.S.A. Dennis Ritchie is known as the founder of the c language . It was developed to overcome the problems of previous languages such as B, BCPL, etc. Initially, C language was developed to be used in UNIX operating system . It inherits many features of previous languages such as B and BCPL. Let's see the programming languages that were developed before C language. Overview of C Language History A brief overview of C language history is given below − Origin of C Programming ' ALGOL' was the foundation or progenitor of programming languages. It was first introduced in 1960. 'ALGOL' was widely used in European countries. The ALGOL had introduced the concept of structured prog...