The main operation performed by operating system is to carries out is the allocation of resources and services, such as allocation of the following −MemoryDevicesProcessorsInformationThe operating system includes programs that are helpful to manage these resources, such as a traffic controller, a scheduler, memory management module, I/O programs, and a ... Read More

Computer architecture can be defined as a set of rules and methods that describe the functionality, management and implementation of computers. To be precise, it is nothing but rules by which a system performs and operates.Sub-divisionsComputer Architecture can be divided into mainly three categories, which are as follows −Instruction set ... Read More

The Computer memory hierarchy looks like a pyramid structure which is used to describe the differences among memory types. It separates the computer storage based on hierarchy.Level 0: CPU registersLevel 1: Cache memoryLevel 2: Main memory or primary memoryLevel 3: Magnetic disks or secondary memoryLevel 4: Optical disks or magnetic ... Read More

Data Abstraction is a process of hiding unwanted or irrelevant details from the end user. It provides a different view and helps in achieving data independence which is used to enhance the security of data.The database systems consist of complicated data structures and relations. For users to access the data ... Read More

Library functions are built-in functions that are grouped together and placed in a common location called library. Each function here performs a specific operation. We can use this library functions to get the pre-defined output. All C standard library functions are declared by using many header files. These library functions ... Read More

The operating system is needed to design and implement because without proper design and implementation any system cannot work properly, for every aspect or for any development a proper design and implementation should be necessary so that it can work in good manner and we can easily debug if any ... Read More

Distributed Operating System is a type of model where applications are running on multiple computers linked by communications. It is an extension of the network operating system which supports higher levels of communication and integration of the machines on the network. Distributed OS ... Read More

Data link layer protocols are divided into two categories based on whether the transmission channel is noiseless or noisy. The data link layer protocol is diagrammatically represented below − Noiseless Channels There are two noiseless channels which are as follows − Simplex channel Stop ... Read More

Use the tag in HTML to display a table body. The HTML tag is used to add a body to a table. The tbody tag is used in conjunction with the thread tag and the tfoot tag in determining each part of the table (header, footer, body). The ... Read More

The tag is used to create a drop-down list in HTML document. We just need to add the “multiple” attribute to the element. Now, in order to select multiple options, we use following syntax − text The HTML ... Read More