sivaiah technology

THE POWER -SUPPLY UNIT The components of a personal computer needed 5 volt and 12 volt voltage current supply since they needed low voltage current A device which converts high voltage current to voltage current is required this device is called power supply using it is placed inside the system unit

RAM RAM stands for Random Access Memory it is also known as read and write memory all information can be written 12 and read from Ram it holds the data temporally as long as the power is not cut off interrupted while working on a computer.

ROM ROM stands for read only memory it holds data permanently but information can only be read and not written on to Rome Rome for the Information Bulletin need this information comprises programs and other instructions required to execute programs on the system.

The input output port s A port is an interface through which data is transferred between your computer and other devices like a printer, Mouse, keyboard, or monitor ports are today's serial port and parallel ports the serial port The parallel port depends on the mode of data transmission The parallel port is used when data is transmitted power parallel finish for example a printer is used on a parallel port If the data is sent over the serial signals a signal port is used for example the most is connected through a serial port

The hard dis k It is a mass storage magnetic medium that uses a rigid material disc for mass storage updater there may be only one hard disc or more than 1 in the system unit In the hard disk we have several types like 250 GB and 500gb and also one terabyte.

CD drive A CD drive is an electro mechanical devic e that can read a compact dis k

The expansion slot The expansion slot is a socket in a computer, designed to hold the expansion board and any connect them to the system bus or data pathway expansion slots are the means for adding enhancing the computer features and capabilities

Logic chips Logic chips are used in the arithmetic logic unit where calculations are carried out

Multi user operating system Multi user operating system allows more than one user to use the same computer at the same time are different times some of the operating systems with fall in the category of Linux Unix, Microsoft Windows 2000 Windows 2000 was the first version of Windows which allowed to create several user accounts on a single machine