Computer Fundamentals and System Concepts

Micro processor

Super computer

ROM

The term reverse engineering has it origins in the hardware world. A company disassembles a competitive hardware product in an effort to understand its competitor's design and manufacturing secrets.

PARAM (Parallel Machine) was the first indigenously built Indian supercomputer, developed by the Centre for Development of Advanced Computing (C-DAC) in 1991. It marked India's entry into high-performance computing and was developed as part of India's technology self-reliance initiative after US technology denial in the 1980s.

'Computer Virus' is a destructive program.

Booting

firmware

Microcomputers became possible due to the invention of integrated circuits (ICs), which miniaturized electronic components onto tiny silicon chips. ICs replaced bulky transistors and vacuum tubes, making small, affordable personal computers possible. Without IC technology, computers would have remained large, expensive mainframes.

A computer is fundamentally an electronic device that processes data using electronic components like integrated circuits, transistors, and circuits. While computers can perform calculations, 'calculating device' is too narrow - they do much more. They're not merely 'electrical' devices (which use electricity but aren't digital), they're specifically electronic devices using electronic components for data processing.

Transistors were first used in 2nd generation computers (roughly 1959-1964). 1st generation used vacuum tubes (1946-1959). 3rd generation used integrated circuits (1964-1971), and 4th generation used microprocessors (1971-present). The transistor revolutionized computing by replacing bulky, unreliable vacuum tubes with smaller, more reliable solid-state components.

A front-end processor is a specialized computer that handles communication tasks and offloads routine processing from the host computer. This allows the main computer to focus on core processing tasks while the front-end processor manages data transmission and protocol handling. Remote concentrators and demux devices have different purposes, and 'Massage switcher' appears to be a nonsensical option.

The trend of decreased cost and increased performance has been a consistent feature across ALL generations of computers, from vacuum tubes to integrated circuits to microprocessors. Each generation brought both lower costs AND better performance compared to its predecessor. This continuous improvement characterizes the entire history of computer hardware development.

Howard Aiken designed the Harvard Mark I (IBM Automatic Sequence Controlled Calculator), which was the first fully automatic calculating machine. UNIVAC I was the first commercial computer, EDVAC used stored-program architecture, and ENIAC was the first general-purpose electronic digital computer.