10Sep 2020 by TeamSOFTLINE777
An Overview Of Computer Viruses

An Overview Of Computer Viruses

Computer
1. What is computer Virus? A Computer Virus is a small block of coded instruction that obtain control of a PC's CPU and directs it to perform unusual and often destructive actions. Virus also called perverse software is a program which knows how to copy itself and attaches itself to other programs which further spread the infection. Anti virus is the method to get rid of perverse software or the viruses. 2. Classifications of Viruses Viruses are classified in the following types: (a) Trojan Horse A Trojan Horse is a program that invades a computer system by secretly attaching itself to a valid program downloaded into the computer. it may be used to locate password information, or it may alter an existing program to make it easier to gain access…
Read More
07Sep 2020 by TeamSOFTLINE777
Desktop Publishing (DTP)

Desktop Publishing (DTP)

Computer
Despite the challenges faced by electronic media in this era of Internet, the importance of printed materials is never get fade. Books and Newspaper are still a prime source of Communication. The process to print a message or material on paper to reach a large scale of people, is called publishing. The main aim of Publishing is to reach the information to the large number of people in the small number of time. It is surprising that a few decades before the first printing machine was installed in the 15th century, a lot of work has changed in the publishing system. In Traditional System Writer writes. Editor Edits. Composer composites it with letter by letter. Proof Reader checks it. And finally Printing Machine prints it. In this way it travels…
Read More
04Sep 2020 by TeamSOFTLINE777
Power Supply Circuit

Power Supply Circuit

Computer
Power supply provides the voltages that printer requires to operate various Printer functions. The printer require 240VAC, +5VDC , +24VDC, and several high voltage DC and AC values that are used by xerographics. The printer AC power cord plugs into a grounded AC wall outlet. The cord carries AC line voltage to the noise filter PWB. The noise Filter smoothes the AC voltage and sends it to the Main Power Switch. Switching on the Main Power Switch applies AC voltage to the AC Driver PWB. And to the Low Voltage Power Supply (LVPS) PWB. The AC Driver PWB is the interface where between printer control (MCU) and the Fuser.Fuser sensors connected to the AC driver PWB send Fuser status information to the Driver PWB, which the PWB routes to the…
Read More
04Sep 2020 by TeamSOFTLINE777

Plotter

Computer
Before looking at the different size of plotters available in the market let us see the standard size of the plotter available, these sizes show the maximum size paper that can be used in them. The actual plotter size may be a little bigger then the paper size that can be used on these plotters. Some common paper size and the name used for these sizes are given in the next table. For business applications such as plotting of graph for the business presentation, etc., the A size plotter provides very good quality output. For architectural or engineering application one would require a minimum D or E size plotter. Types Of Plotters Plotters can be divided into different types based on the number of pen divided into different types based…
Read More
04Sep 2020 by TeamSOFTLINE777
Printer Troubleshooting

Printer Troubleshooting

Computer
Ninety percent of the Printer problems are rectified by a non-technical person. Because most of the time the problem is not because of the electronics inside the Printer. Instead most of the fault reported about the printer is due to some mechanical fault in the printer cable. It could also be due to printer not being setup properly. It could be due to some problem in the Software. (troubleshooting) Troubleshooting Dot-Matrix Printer Print Quality Poor -Ribbon Worn Out or Damaged -Print Head Too Close to the Platen -Ribbon drive Assembly Faulty -Print head is faulty No Power to Printer -Fuse has Blown -Faulty Power On-Off Switch -Internal Power Supply has failed -Main Logic Board is Shutting Down the Power Supply Power OK but No Printing -Printer Cable Not Installed Properly…
Read More
31Aug 2020 by TeamSOFTLINE777
Printers: An Introduction

Printers: An Introduction

Computer
Printers and Monitors are two of the Most common output devices use with the Computer. A Monitor provides us with a "Soft Copy" of our results, the results shown on the monitor is not permanent. The Printer uses to get the Hard Copy of the results. i.e. It is used to get a permanent copy of the result (which can be viewed, filed, and used at a later stage) on the paper or some other media. Today, Printer is capable of high-quality monochrome. That is single color and multicolor printout at a very high speed. Most of the printer are capable of high-quality can produce text as well as graphic images. Printers are often categorized based on the mechanism used by the Printer to print the Image and also they…
Read More
31Aug 2020 by TeamSOFTLINE777

Dot-Matrix Printer

Computer
Main sections of a Dot-Matrix Printers are:-Mechanical Section of Printer -Electronic Section of Printer Mechanical Section While Printing the moving parts of the Printers are called as Mechanical Section. The main parts of the Mechanical section are: -Carriage motor -Paper feed motor -Gears -Head -Belt Roller-Home and Paper sensor -Ribbon -Ribbon Cartridge -Cartridge Assembly Electronic Section This section is divided into three parts: -Power supply section -CPU section (Logic Board) -Interface Section Printers by different companies have different IC's used in these sections. Some Printers have all these sections on separate PCB board and some printers have two sections on a single board and third section on a separate board. Printing Process When Printers are switched on, different regulated DC voltages from power supply sections are supplied to the logic…
Read More
14Aug 2020 by TeamSOFTLINE777
Classification of Computer

Classification of Computer

Computer
Digital computer may be classified as their size, cost, and the working capacities in the following sections:1. Home Computers 2. Personal Computers 3. Minicomputers 4. Workstations 5. Mainframe Computers 6. Supercomputers Home Computer A home computer primarily used for education and games. A very in expensive personal Computer, might actually be classified as a home computer. Among old models, the Apple II series and Tandy Colour computer are examples of home computers. Among the recent models, MacII and Network Computer (NC) computer considered as the Home computers. Personal Computer A personal computer is design for an Individual user. The personal computer is functionally identical to larger computers that serve multiple users and have greater disk storage capacities. Personal Computers are typically use for applications. Such as word-processing, spreadsheets, database management…
Read More
14Aug 2020 by TeamSOFTLINE777
Translator

Translator

Computer
Translating Programs, also known as language processors. They are the system programs that translate a source program in high level language. Such as BASIC to an object program in Machine Languages or Binary language or in 0 and 1. Which is meaningful to the hardware of the Computer. These programs include the assembler and the various Compilers and Interpreters available with the System Software. A translating program is usually called from a direct access storage device only after the Job control program of the Operating System Interprets a job control statement and informs the operating System supervisor of what is needed. (translator) Compilers Since a Computer hardware is capable of understanding only machine level codes or in binary form. So it is necessary to convert the instructions of a program…
Read More