Operating System - File System

Operating System - File System File A file is a named collection of related information that is recorded on secondary storage such as magnetic disks, magnetic tapes and optical disks. In general, a file is a sequence of bits, bytes, lines...

Operating System - I/O Softwares

Operating System - I/O Softwares I/O software is often organized in the following layers − ·        User Level Libraries − This provides simple interface to the user program to perform input and output. For example, stdio is...

Operating System - I/O Hardware

Operating System - I/O Hardware One of the important jobs of an Operating System is to manage various I/O devices including mouse, keyboards, touch pad, disk drives, display adapters, USB devices, Bit-mapped screen, LED, Analog-to-digital converter, On/off switch, network...

Virtual Memory

Virtual Memory A computer can address more memory than the amount physically installed on the system. This extra memory is actually called virtual memory and it is a section of a hard disk that's set up to emulate the computer's RAM. The main visible advantage...