Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
XLSX file is a standard file extension for the modern Microsoft Excel spreadsheet. We use of these files to analyze and organize data and they usually contain numerical data separated by rows and columns within a cell.On the other hand, a CSV file is basically a delimited text file that uses a comma to separate values, and each line of this file is usually a data record.While both the xlsx and csv formats of storing data are way different, as one makes use of tables with rows and columns, while the other uses commas to separate the values, but that ... Read More
We know that most of the time we want our node applications to listen on port 80. While it is a widely used technique and many times we don’t need anything else then just simply mentioning the port as 80 in our project configurations. The real issue actually resides in the fact that many of the operating systems nowadays require root privileges for this to happen (e.g., OS X, BSD).One workaround is to make sure that we start our application with the superuser.Commandsudo node server.jsWhile this might actually solve the problem for quite an extent, this approach has its vulnerabilities ... Read More
By default, we don’t have the .zshrc file present in macOS Catalina, and we need to create it. In order to create the .zshrc file, we can follow the steps shown below −Open TerminalType touch ~/.zshrc to create the file.Hit ReturnWe can also open the .zshrc file in the terminal from any directory by just typing the command shown belowExamplevi ~/.zshrcOutputimmukul@192 linux-questions-code % cat ~/.zshrc export GOPATH=/Users/immukul/go_projects export NDHOME=/Users/immukul/Downloads export GOTRACEBACK=all export GOROOT=/usr/local/go export LC_CTYPE=C export PATH=/home/Systems export LANG=CIt should be noted that the output may vary from machine to machine.To add an entry to the PATH variable present inside ... Read More
Pipeline arithmetic units are generally discovered in very large-speed computers. It can execute floating-point operations, multiplication of fixed-point numbers, and the same computations encountered in mathematical problems.The inputs to the floating-point adder pipeline are two normalized floating-point binary numbers represented as −X = A x 2aY = B x 2bWhere A and B are two fractions that define the mantissa and a and b are the exponents. The floating-point addition and subtraction can be implemented in four segments, as a displayed figure. The registers labeled R is located between the segments to save intermediate outcomes. The suboperations that are implemented ... Read More
An instruction pipeline reads consecutive instructions from memory while in the other segments the previous instructions are being implemented. Pipeline processing appears both in the data flow and in the instruction stream. This leads to the overlapping of the fetch and executes the instruction and hence simultaneous operations are performed.There is one possible more event associated with such a design is that instruction can generate a branch out of a sequence. In this method, the pipeline is clear and all the instructions that have previously been read from memory after the branch instruction should be rejected.A computer can be constructed ... Read More
The binary division is similar to division in decimals. The process involves successive comparison, shifting, and subtraction. The division of binary numbers is easy compared to the division of decimal numbers because the quotient is either 0 or 1. It is also not necessary to check the number of times the dividend (partial remainder) fits into the divisor.Divide OverflowIn a computer system, the division operation can lead to a quotient with an overflow because the registers cannot hold a number that exceeds the standard length. To understand this better, consider a system with a standard 5-bit register.One register is used ... Read More
Parallel processing systems are created to speed up the implementation of programs by breaking the program into several fragments and processing these fragments together. Such systems are multiprocessor systems also referred to as tightly coupled systems. Parallel processors can be divided into the following four groups based on the number of instructions and data streams are as follows −SISD Computer OrganizationSISD represents a computer organization with a control unit, a processing unit, and a memory unit. SISD is like the serial computer in use. SISD executes instructions sequentially and they may or may not have parallel processing capabilities.Instructions executed sequentially ... Read More
Know Your Client (KYC) or Know Your Customer (KYC) is a crucial procedure used to validate the identification and other credentials of a financial services user before providing them with services. Identity and other information about a financial services user is verified via a regulatory procedure known as Know Your Customer (KYC).Key Points BrieflyKnow Your Customer (KYC) specifications are followed by the Government and financial services sector to check clients, especially their risk profiles, and to verify their presence as valid citizen in some cases.In the investing business, the Know Your Customer (KYC) regulations state that every broker-dealer must make ... Read More
RISC stands for Reduced Instruction Set Computers. It was introduced to execute as fast as one instruction per clock cycle. This RISC pipeline helps to simplify the computer architecture’s design.It relates to what is known as the Semantic Gap, that is, the difference between the operations provided in the high-level languages (HLLs) and those provided in computer architectures.To avoid these consequences, the conventional response of the computer architects is to add layers of complexity to newer architectures. This also increases the number and complexity of instructions together with an increase in the number of addressing modes. The architecture which resulted ... Read More
A static method or, block belongs to the class and these will be loaded into the memory along with the class. You can invoke static methods without creating an object. (using the class name as reference).Where the "super" keyword in Java is used as a reference to the object of the superclass. This implies that to use "super" the method should be invoked by an object, which static methods are not.Therefore, you cannot use the "super" keyword from a static method.ExampleIn the following Java program, the class "SubClass" contains a private variable name with setter and getter methods and an ... Read More