C programming tutorial

C has 32 keywords, these keywords cannot be used as variable name. Father of C programming – Dennis Richie. 16 bit compiler have integer range -32768 to 32767. C is a high level language with some low level features. C is primarily developed as system programming language If integer need two bytes of memory to …

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Types of computers, system software, concept of file, directory and folder

Classification of computer Computers are classified into five, they are microcomputer, minicomputer, workstation, mainframe computer and supercomputer Microcomputer – personal computer (eg : laptop), device used to scan code of products in supermarket Minicomputer is a small general purpose computers, have the capability to serve a number of users simultaneously Workstation is a single user …

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DOS – Disk operating system

DOS (disk operating system) DOS uses a command-line interface with personal computer .MS-DOS mode is a shell in which MS-DOS environment is emulated in a 32-bit system like windows. MS-DOS programs can run with windows, and create PIF (program interface file) which contains all settings. MS-DOS is written by Tim Paterson and introduced by Microsoft. …

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Introduction to communication engineering

Note this points which are regularly asked in all competitive exams : Accoustic channel is used for  person to person voice communications. At high frequency transit time noise is important. HF mixer is noiser than HF amplifier. Strongest noise interface occurs at 20 to 120 MHZ. Leak-type bias is used in a plate modulated class …

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