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An electric motor is an energy conversion device that converts electrical energy into mechanical energy. Therefore, the input to an electric motor is electricity, while the output of the electric motor is mechanical energy in the form of rotation of the shaft. Based on the type of electrical energy that motor requires to operate, the electric motors are classified into two types, i.e. AC Motor and DC Motor. An AC Motor or alternating current motor is one that transforms electrical energy in the form of alternating current into rotational mechanical energy. On the other hand, an electric motor which transforms ... Read More
In this article, we will learn to write a Go language program to convert the local time to GMT using internal functions like Now() Time, LoadLocation()and time.In(). Local time is the time of a particular region which is calculated using position of the sun at noon. The local time is obtained using Now function from the time package whereas the local time is converted to GMT using ln function from the time package. Syntax func Now() Time The Now() function is defined in time package. This function generates the current local time.To use this function, we have to first ... Read More
What is a Hosted Desktop? A type of cloud computing service model that allows users to access a desktop environment virtually from anywhere with the help of an internet connection is referred to as a hosted desktop. The hosted desktop is also known as virtual desktop because the users can access the virtual desktop environment from any device like tablet or smartphone without having a physical computer. Hosted desktop is a termed as Desktop as a Service (DaaS). In the hosted desktop model, a desktop environment is hosted on servers in a data center and it can be then ... Read More
It is a prerequisite to understand the terms "process synchronization", "critical section", and "inter-process communication" before we proceed to discuss the Bakery Algorithm in Process Synchronization. What is Process Synchronization? In a multiprocessing system, the process synchronization is a method of coordinating execution of multiple processes so it is ensured that all the processes access shared resources in a controlled and predictable manner. The primary goal of process synchronization is to avoid the problem of race conditions in the system. Though, it also resolves many other issues related to synchronization in a concurrent system. Therefore, the process synchronization ensures that ... Read More
In operating systems, a bad block is a sector on a dick drive or a flash of the computer system which is not usable due to a permanent damage to the disk like physical damage of the disk surface or failed transistors of flash memory. In this article, we will discuss the bad block in detail along with their different types, causes, replacement, etc. So let’s get started with the basic definition of bad block in operating system. What is a Bad Block in Operating System? The storage area of a memory device such as disk drive or flash drive ... Read More
In operating system design, the kernel memory allocation is a critical aspect which involves the allocation of memory for kernel level operations and data structures. When a process is executing in user mode and it requests the additional memory, then the kernel maintains the allocation of pages from the list of free page frames. Hence, the kernel memory allocation can be defined as under − "The process by which the kernel of the operating system allocates memory for its internal operations and data structures is called kernel memory allocation." In other words, the process of allocating memory in the kernel ... Read More
Connecting a laptop to a monitor allows you to use both screens simultaneously or use the monitor screen alone while closing the laptop screen. You can use a connecting cable such as HDMI, DisplayPort, USB-C, VGA, or DVI. This article explains how to find out what cable to connect your laptop to a monitor or use the monitor as a mirror to extend your laptop screen. There are two methods to do that, and we have mentioned each method in easy-to-follow steps − Method 1: Connect the Laptop to a Monitor First, you need to find what video output ports ... Read More
Introduction Expansion buses in PCs are interfaces that allow peripheral devices to connect to the motherboard and communicate with the CPU and other components of the system. Expansion buses typically consist of one or more expansion slots, and different types offer varying data transfer rates and maximum bandwidth. By providing a pathway for data transfer between peripheral devices and the CPU, expansion buses enable users to increase the functionality and performance of their computer systems. The ability to add new hardware components or upgrade existing ones through expansion buses has helped to extend the lifespan of PCs and has made ... Read More
Embedded operating systems and desktop operating systems are two distinct categories of software systems that serve different purposes. Embedded operating systems are designed to run on specialized devices, such as medical devices, automotive systems, or industrial equipment, which perform specific functions. Desktop operating systems, on the other hand, are designed to run on personal computers or laptops and support a wide range of applications. Understanding the differences between embedded and desktop operating systems is important for developers, engineers, and anyone working with software systems. Key Areas Covered What is an Operating System? What is Embedded OS? Advantages and Disadvantages ... Read More
There are times when we would want to know how many key-value pairs are present in a hash. These key-value pair counts are also known as the size of the hash. In Perl, we can find the number of keys in a Perl hash by using the "scalar" keyword or "keys" keyword. In this tutorial, we will explore two Perl examples where we will calculate the number of keys in a hash. Example Consider the code shown below. In this code, we have declared a hash named "countries" and in that hash, we have different countries, each having ... Read More