History and Generations of Computers.

RISC points toward simpler instruction sets and CISC toward more complex instruction sets. For exams connect processor development with instruction design too.

Language development made computer use and software creation easier. For exams understand the order of language levels.

Assembly is easier than machine language but remains low level. For exams understand it as an intermediate language.

Both were early high level languages but had different use areas. For exams match language with use area.

Compiler made human friendly programming practical. For exams remember the Grace Hopper and compiler link.

In computer science, a ‘bug’ is an error in a program or system that causes an unexpected result. In 1947, a moth was found in a relay of the Harvard Mark II computer, a famous incident associated with Grace Hopper and often mentioned in connection with popularising the term ‘debugging’. Therefore, option A is correct; a microprocessor, web server and punch-card machine are not meanings of bug. Exam tip: remember bug as an error and debugging as the process of finding and removing it.

Intel 4004 is linked with microprocessor history of 1971. For exams remember it as a fourth generation clue.

Altair increased interest and IBM PC strengthened the market. For exams keep stages of personal computer development separate.

Both are important in Apple history but their contributions differ. For exams match product and role correctly.

Xerox PARC influenced modern interface ideas. For exams distinguish research laboratory and market product.

Engelbart's contribution is part of broader interface history. For exams connect the mouse with human computer interaction.

Unix is a historical operating system tradition and Linux is a separate open source kernel. For exams do not treat both as the same object.

ARPANET was a link in Internet development while Web is a later hypertext service. For exams keep network and service separate.

Tim Berners Lee is linked with the Web and Mosaic was an early popular browser. For exams keep creation and spread distinct.

Mainframes relate to large data transactions and supercomputers to scientific computation. For exams check use along with size.

Minicomputers brought computing to medium institutions. For exams check all three clues size cost and use.

PARAM is linked with C DAC and India's supercomputing efforts. For exams remember Indian contributions separately.

Analog uses continuous data digital uses discrete data and hybrid combines both. For exams check the data type behind the example.

Moore's law relates to microelectronics development. For exams study it as a clue of chip progress.

Core memory was a memory technology of old computers. For exams study memory history along with computer generations.

Magnetic media made data storage more practical. For exams identify input and storage development separately.

Both relate to operating system development but their main focus differs. For exams separate user experience and resource efficiency.

Linus Torvalds is linked with Linux kernel, not Pascaline. In exams identifying wrong pairs is very important.

Expert questions create confusion by combining many clues. For exams read full context instead of one clue.

Transistors improved second generation computers in size power use and reliability. For exams treat the shift from vacuum tubes to transistors as a key generation change.