Perfect Computer Notes

What is a Computer Security Threat? A computer security threat may be defined as any action or event that may cause damage to any part of a computer system. Computer System Security Threats  How Does Computer Security Threat Cause Damage? A Computer security threat may cause damage to hardware, software, data , information or processing capability of a computer system. Different Types of Computer System Security Threat There are many different types of security threats to computer systems as follows: Hacker Virus Worm Adware Tech support scams Ransomware  PUP Potentially Unwanted Software Hacker  Hacker is a person who uses computer system to access private data of illegally. Hackers access a computer network and its resources illegally. Hacker - Security Threats To Computer Systems and Networks Hackers have a vast knowledge of computer science and are computer experts. They may have deep knowledge of  high level programming languages, low level p

Q: Explain E-Marketing or Internet Marketing. Internet marketing or e-marketing is the marketing  of products or services over the Internet. It is also referred to as i-marketing, web-marketing, online-marketing, electronic marketing or e-Marketing. Explain Advantages and Limitations of e Marketing or internet marketing  Advantages of e Marketing Internet marketing is relatively inexpensive.  Companies can reach a wide audience for a small fraction of traditional advertising budgets.  The nature of the medium allows consumers to research and purchase products and services at their own convenience.  Internet marketers also have the advantage of measuring statistics easily and inexpensively. The results of campaigns can be measured and tracked immediately, because online marketing initiatives usually require users to click on an advertisement, visit a website, and perform a targeted action. Limitations of e Marketing Internet marketing requires customers

Why Do We Use Excel Pie Charts? Excel Pie Charts are used in a Microsoft Excel Worksheet to display the contribution of each cell value to the total value. Today, we will discuss the procedure of creating a Pie chart in Microsoft Excel. Start Microsoft Excel and perform the following steps as explained with the help of nice clear pictures. Creating Excel Pie Charts Easy Tutorial With Pictures Steps To Create Pie Chart in Excel 1. Prepare Example Excel Worksheet For Pie Chart Start Microsoft Excel with a new blank workbook. Microsoft Excel is a part of Microsoft Office. Prepare a new Excel Worksheet as shown in the figure below to show Serial Numbers, Batsman and their Scores got in a cricket match. Fill in the sample data as you wish. 2. Select Cell Range To Prepare Excel Pie Chart Select The Two Columns named Batsman and Scores with filled values and column titles, as shown in the figure above. 3. Use Insert Tab To Create Pie Chart Click on Insert Tab and c

After reading this topic you will be able to clearly understand the meanings of Procedural and Non Procedural Languages and the differences between procedural and non procedural languages .  Here is a brief note on procedural and Non Procedural Computer Languages: Procedural Languages Explain Differences between Procedural Languages and Non Procedural Languages in Computer Programming In procedural languages a program is written as a sequence of instructions. We have to specify what to do and how to do. In procedural languages a program will tell the whole step by step procedure to perform a particular task or job.  So we provide a sequence of instructions and these instructions are executed in the given specified order. These instructions are written in order to solve a specific problem. Procedural languages are also called 3rd Generation languages or 3GL.3GL languages are Examples of procedural languages  Examples of Procedural languages are FORTRAN, COBO

Topic: Explain Different Types of Programming Languages and Differences What is a programming language? Types of programming languages : Low level and high level programming languages with examples Differences between low level and high level programming languages What is a Programming Language? A set of words, symbols and codes used to write programs is called programming language. Different programming languages are available for writing different types of programs. Learn Programming now in easy steps from Perfect Programming Tutorial on EasyCodeBook.com Explain different types of programming languages With the help of computer language, a programmer tells a computer what to do. Some popular computer programming languages are C++, Java, Visual Basic etc. These are examples of high level programming languages. Whereas machine language and assembly language are called low level programming language. Another Definition of a Programming Language A programming languag

Today, We will discuss the simple and easy way to unsubscribe the Utunes Service of Ufone . Remember, Utunes service will cost you at the rate of  Rs. 1.55 daily. easy way to unsubscribe the Utunes Service of Ufone I was using the mobile phone of my son when I saw an SMS message from Ufone Hisaab SMS. The message was in Urdu language and it was informing the cost of Utunes Service Rs. 1.55 per day. The message of Hisaab SMS is shown in the following figure:  What is Utunes Sevice  With Ufone UTunes service your friends and family can listen to your favorite tunes every time they call you. You can select a UTune from the content library. I think Utunes is one of the most useless services of Ufone that is costly too. So I tried to find the solution for deactivation of Utunes service instantly. How To Unsubscribe / Deactivate Utunes Service Type a new message "UNSUB" and send it to the number 666.  You will recieve a message from Ufone 666 as sh

What is a Function in Microsoft Excel? Microsoft Excel provides a large number of Functions for processing data in Excel Worksheets easily. Functions are predefined formulas in Excel. These functions are used in different types of calculations on numerical or other data  quickly. How a Function is Used in Microsoft Excel? There are three popular ways to use built-in functions in Microsoft Excel. 1. Type Functions Manually 2. Use Function Library Commands 3. Use Insert Function Dialogue Box Other Microsoft Excel Topics on www.ComputerGap.com  Microsoft Excel Formulas and Functions Fast and Easy Way -1 Using Simple Formulas in Excel With Arithmetic Operators 2 How Functions are Used in Excel Fast and Easy Way 3 Create Bar Chart in Excel Easily by Example Employee Pay sheet Formulas in Microsoft Excel  Students Test Score Grades Result Sheet in Excel Electricity Bill Calculator Formulas in Excel    Microsoft Office Word Processing Practicals 1