Perfect Computer Notes

Q. Define Language processor or Translator. Explain different types of Language processors. Language Processors / Translator         Computer directly understands machine language only. That is why Machine language is called the native language of computer. Machine language is in binary form that is its instructions consists of strings of zeros and ones.         A program written in high-level or assembly language cannot be run on a computer directly. Firstly, it is converted into machine language. So there is a need to translate the source program into object code for a computer to execute it.  Definition of Language Processor  Language processor may be defined as a software that converts source programs into object program. Language processor is also called Language Translator.  Therefore, a language translator software will take a source program(that cannot be understood by computer) as input and then will convert it into object code(that can be understood by computer

What is a Program and Programming Language Program A set of instructions that tell a computer what to do is called program. A computer works according to the given instructions in the program. Computer programs are written in programming languages. A person who develops a program is called programmer. Programming Languages 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 . With the help of computer language, a programmer tells a computer what to do.   Explain different Types of Programming Languages. There are two main types of computer programming languages. ·         low-level languages ·         high-level languages. Low Level Languages These languages are near to computer hardware and far from human languages. Computer can understand these languages easily. Following are two low-level languages: •      Machine Language •   

Topic: Explain Advantages of CD and DVD and Differences Between CD and DVD  What is CD? CD stands for Compact Disc. Compact Disk or CD is a popular storage device. It is a portable storage device. It can store about 700 MB (Mega Bytes) of data. Advantages of Compact Disk It can store large amounts of different types of data. It can store information in the form of sound, videos, programs or software, pictures and other graphics, documents and many more formats of data. We purchase games and software stored on CDs. CD can store audio/ video songs and videos, too. It is very inexpensive way of storing large amounts of data permanently. It is used for backing up of important data, that can be recovered in future if any data is lost from our PC's hard disk. Compact Disks are easy to use and easy to carry. Compact Disks are durable and reliable. CDs can store data for many years without losing a single byte. Different Types of Compact CDs are: CD-ROM

Today, while searching on Internet for the Best Free Antivirus of  the year 2013, I decided to do some research work in a different way. There are many reputed Software Repository Websites found on Internet. These websites provide information about new Software with reviews, technical details, Editor Ratings, User ratings, number of downloads and download links. I did research on these sites EDITOR RATINGS for the popular Free Antivirus Software found on Internet. I selected the following popular Software Download Websites: 1. Softpedia.Com Softpedia is an Internet site that indexes information and provides software. The site also covers technology, science, health, and entertainment topics from external and in-house sources and provides software and game reviews. As of 2012 it was the 25th most-visited site by Romanians. It is a "popular destination for software download". 2. Snapfiles.Com  Snapfiles provides facility to Download freeware and shareware programs, f

Comodo Internet Security combines Comodo AntiVirus with a personal firewall that filters ingoing and outgoing traffic on your computer. It alerts you of any applications that attempts to connect to the Internet and allows you to permanently or temporarily allow or block the connection. Comodo is on Number 3 in Free Antivirus Competition 2013 Comodo Internet Security is a free antivirus and PC security solution that combines a number of effective security tools into one easy-to-use package. It provides some important characteristics, such as cloud-based virus scanning and behavior analysis to counter zero-day threats, a sturdy firewall, sandboxing, and anti-spyware, too.        Important Features of the Comodo Free Antivirus         Secures against internal and external attacks (Antivirus and Firewall Combination)and maintains smooth running of your PC     Blocks internet access to malicious Viruses, Worms and Trojan Horses     Safeguards your precious Personal data against

Bitdefender Antivirus Free Edition is the first free antivirus product compatible with Windows 8. Game at full speed! Bitdefender Antivirus Free Edition knows when it’s time to quietly monitor in the background, but also when it can resume, once you hit “quit” in your MMORPG. Bitdefender Antivirus Free Edition will function automatically and take care of itself, so that you won’t have to check back or make phone maintenance each time a virus is detected. Look! How Bitdefender Wins the Number 7 Position in The World Champions Trophy  for Free Antivirus Protection Software: Title: BitDefender Free Edition File size: 21.08MB Requirements: Windows XP / Vista / XP64 / Vista64 Languages: en-US License: Freeware Author: BitDefender.com www.bitdefender.com                  Suggested Related Readings Virus and Antivirus: Problem and Solution Top 7 B

Microsoft Security Essentials provides real-time protection for your home PC that guards against viruses, spyware, and other malicious software. Microsoft Security Essentials is a free download from Microsoft that is simple to install, easy to use, and always kept up to date so you can be assured your PC is protected by the latest technology.  Microsoft Security Essentials came into existence as Microsoft's first attempt of a standalone security application for home use. Although it has a simple user interface suitable for beginners, it probably isn't the best choice for more advanced users or professional network administrators, but for the average user, it covers all the bases. Bear in mind, however, that Microsoft Security Essentials doesn't disinfect files - it only deletes them in case of infection. It can be dangerous, if the files are important and contain precious data like financial transaction records or business sale purchase data. System Requirements: