Printer

                   Printers are used for producing output on paper. There are a large variety of printers and printing devices which can be classified according to the print quality and printing speed.

These varieties of printers are:

Printing Technology- impact printers vs. non impact printers

Impact printers use variations of the standard typewrite printing mechanism where a hammer strikes paper though an inked ribbon.

A non impact printer uses chemical, heat or electrical signal to produce symbols on paper. Some of these require special coated or treated paper to print characters on them.

WEB CAM:

Web cam is hardware device and also a camera. This can be various in size and also various in type. It is normally a small camera which is used to take low picture and upload in internet. or can be used for video calling. In which we can see the person anywhere in the world and take with him or her, who will using an internet connection. It can be possible only for this web camera WEB CAM device. It was classified into two parts one is ordinary camera and other is high definition camera. This camera can also be used as observation camera in a merchant place or company.

 SOFTWARE

APPLICATION SOFTWARE: 

            Application software is a user made software, which we use for our daily computer work. As example to write a latter we can use MS- Word, WordPad, Notepad etc. and to draw we can use MS- Paint and also to calculate we can use MS- excel. These all software’s are application software. The application software can operated easily. These all application software’s are very easy to understand and can do work easily and in high power. And day by day more and more application software are being created or invented.

UTILITY SOFTWARE:

             Utility software is software, which is use to copy, sort, editing, maintenance, back-up, and disk-formatting in computer user’s daily computer work. As example; we use quick hell anti-virus to protect our computer from various, it also a utility software.

SYSTEM SOFTWARE:

            System software is a software, which is use to run a computer all system. As example; Operating software and Language processing software are system software.

System software can be classified into two parts one is operating software and another is language software.

            Operating system: operating system or software is a process in which computer user and computer we connect with each other. That’s mean computer user can use computer system. After loading a computer system the keyboard and mouse and may other important parts of computer start to work. Some of the operating system are MS-DOS, Windows’s-98, Windows’s-XP, Windows’s-07, UNIX, Linux.

             Language software: a computer never understands our language. Computer only understands program language. That is binary word (0 and 1). So computer system uses software to convert our language to computer Language software works to Programming, Program developing, Translating, Debugging, and Loading.

Introduction of Computer Languages

              Computer supports some language to do it work. These call program language. Program language can be classified into three parts. That the classification 

is ……

              These program language are used to create some logical equation and some short programs. Which we may can use as a software work. That the utility of using program languages. After all we can say without using program language we cunt operate a computer system. Because of it is computer does not understand our languages.