| Level | Language | Description | |-------|----------|-------------| | 1GL | Machine Language | Binary (0/1) – fastest, hardware dependent | | 2GL | Assembly Language | Mnemonics (MOV, ADD) – uses assembler | | 3GL | High-Level Language | C, C++, Java, Python – portable, uses compiler | | 4GL | Query/Report | SQL, RPG – database oriented | | 5GL | AI/Logic | Prolog, LISP – problem solving |
Every year, exams repeat concepts. Disha compiles memory-based questions from the last 5-7 years. If you solve these, you will notice a pattern. For example, the question "What is the full form of GUI?" or "Which company developed Windows?" appears in almost every exam. disha computer awareness pdf
Computer awareness is not static. With the rise of the Digital India campaign, topics like UPI, net banking frauds, ransomware, and e-governance initiatives have become frequent exam questions. Good publishers frequently update their PDF editions (e.g., Disha’s 2024 or 2025 editions) to include such contemporary issues. A static old PDF from 2018 would miss topics like 5G technology or National Cyber Security Policy. Therefore, aspirants must always check the edition year. Every year, exams repeat concepts
The shift from physical books to PDFs has revolutionized last-minute revision. A Disha Computer Awareness PDF can be stored on a smartphone, tablet, or laptop. During a train commute or lunch break, an aspirant can revise fundamental topics like “shortcut keys in Windows” or “database normalization.” This “just-in-time learning” increases retention. Moreover, PDFs allow text search, bookmarking, and highlighting—features impossible with traditional books. topics like UPI