Computer Science

Directory is the file owned by the operating system. File directory contains various important information.

The OS is mainly responsible for multiprogramming. The hardware provides the specific circuitry that may be used by the operating system.

A logical structure stays the same no matter how the document is represented. The best fit is thus calculated from the logical structure.

They are referred to as data scanning devices. They eliminate the need to key in text data into the computer. It demands the high quality of input documents.

Disk packs use a number of hard disk platters. Also, they are mounted on a single central shaft.

All the numbers except 99.9A are decimal numbers.

Usage denotes the format in which data is stored in the memory. Normally the phrase usage is omitted in COBOL.

The Process of incorporating changes in an existing system to enhance, update, or upgrade its features is called system maintenance. On an average, maintenance cost of a computerized system is two to four times more than the initial development cost.

A keyboard is an input device which originated in the 1880s and is used to give instructions to the computer in the form of letters and numbers. Mouse is used for the selection of various objects on the screen, joystick is mainly used for gaming purpose and bar code readers are used for reading the bar-codes.

HTML5 which is the hypertext markup language generally uses the UTF-8 format as its default encoding. Unicode covers all the characters and symbols in all the different languages.