Showing posts from September, 2013

Parts of a computer

A computer is admittedly a system of the many components operating along. The physical components, that you will see and touch area unit jointly referred to as hardware. (Software, on the opposite hand, refers to the directions, or programs, that tell the hardware what to try to do.)
The illustration below shows the foremost common hardware in an exceedingly desktop computer system. Your system could look somewhat completely different; however it in all probability has most of those components. A laptop computer has similar components however combines them into one notebook-sized package.
Let's take a look at each of these parts. System unit The system unit is that the core of a system. Sometimes it is a rectangular box placed on or beneath your table. Within this box are several electronic parts that method information. The foremost vital of those parts is that the central processing unit (CPU), or microprocessor, which acts as the "brain “of your computer. Another element is ra…

Computer Language or Programming Language

Computer Language A programming language is an artificial language designed to communicate instructions to a machine particularly a computer. Programming languages can be used to create programs that control the behavior of a machine and/or to express algorithms precisely. Alternatively, a programming language is a notation for writing programs, which are specifications of a computation or algorithm.
Levels of Programming Languages There is only one programming language that any computer can actually understand and execute: its own native binary machine code. This is the lowest possible to write a computer program. all other language are said to be high level or low level according to how closely they can be said to resemble machine code.
Low-Level Language A low-level language corresponds closely to machine code, so that a single low-level language instruction translates to a single machine language instruction. Low-level language has the advantage that they can be written to take advant…

Modern Printing technology

Printer In computing, a printer is a peripheral which produces a text or graphics of documents stored in electronic form, usually on physical print media such as paper or transparencies. Many printers are primarily used as local peripherals, and are attached by a printer cable or, in most new printers, a USB cable to a computer which serves as a documents source. Some printers, commonly known as networks printers, have built-in network interfaces, typically wireless or Ethernet based, and can serve as a hard copy device for any user on the network. Individual printers are often designed to support both local and network connected users at the same time.

Printing technology Printers are routinely classified by the printer technology they employ; numerous such technologies have been developed over the years. The choice of engine has a substantial effect on what jobs a printer is suitable for, as different technologies are capable of different levels of image or text quality, print speed, c…

Storage system

Types of Storage Devices
Categorizing devices The purpose of storage devices is to hold data even when the computer is turned off- so the data can be used whenever it is needed. Storage involves two processes: ·Writing data – or recording data on the surface of a disk or tape –where it is stored for later use. ·Reading data or retrieving the data from the surface of a disk or tape and then transferring it into the computer’s memory. The physical materials on which data is stored are called storage media. The hardware components that write data to, and read it from, storage media are called storage devices. The two main categories of storage technology used today are magnetic storage and optical storage.
Magnetic Storage Optical Storage Diskettes Hard disks Floppy disks Magnetic tape Disk cartridges Memory (CD-ROM) Compact Disk Read-Only Memory (CD-ROM) CD-Recordable (CD-R) / CD –Re-Writable (CD-RW) High –Capacity Digital Video Disk Read-Only Memory (DVD-ROM) DVD Recordable (DVD-…