Introduction Semantic analysis is performed by the Semantic Analyzer. Definition Semantic analysis is the third phase of a compiler that verifies the semantic errors (undeclared identifiers, type mismatches, duplicate declarations, etc.) of the valid parse tree generated during the syntax analysis phase to ensure it is logically correct. Characteristics Semantic Read more…
Introduction The Syntax Analysis phase is also called Parsing. Definition Syntax Analysis is the second layer/phase of a compiler, in which the parser analyzes the sequence of tokens produced by the lexical analyzer phase to determine whether the input program (created tokens) follows the grammar rules of a programming language Read more…
Introduction Lexical Analysis is the first layer/phase of a compiler. The Lexical Analysis phase is also called Scanning. A Pattern in this phase is a rule (often expressed with regular expressions) that defines how lexemes are recognized as tokens. A Lexeme in this phase is the actual string of characters Read more…
The structure of a compiler is organized into multiple phases, each responsible for transforming source code step by step into machine code. [A.] At a broad level, compilers consist of several phases – (a.) Lexical Analysis Phase (b.) Syntax Analysis Phase (c.) Semantic Analysis Phase (d.) Intermediate Code Generation (e.) Read more…
History Early Beginnings (1940s–1950s) The history of compilers started in the late 1940s with early ideas for automatic programming. In 1949–1951, Heinz Rutishauser proposed Superplan, a high-level language with an automatic translator, refined by Friedrich L. Bauer and Klaus Samelson. Grace Hopper coined the term “compiler” in 1952 for her Read more…
Introduction When designing digital systems, especially for the first time, such as calculators, computers, and communication devices, we often start with complex Boolean expressions that involve several variables and gates. These expressions can be simplified using specific techniques later, allowing the same logical function to be performed using fewer gates Read more…
History The concept of flip-flops dates back to the early days of electronics. The idea behind bistable circuits (flip-flop) dates back to early 20th-century electronics. The first practical bistable multivibrator flip-flop circuit was invented by William Eccles and F. W. Jordan in 1918, and it was called the Eccles–Jordan trigger Read more…
Slno. Tools Name Description Remarks ## India’s First indigenous Operating System India’s first indigenously developed operating system is Bharat Operating System Solutions (BOSS). It was developed by the Centre for Development of Advanced Computing (C-DAC), Chennai, under the Ministry of Electronics and Information Technology, Government of India. This OS was Read more…
Slno Tools Name/ Descriptions Links Remarks ## AI Prompt Generator Link1 Link2 Link3 — ## To use major AI Chat in one place LMArena — ## ChatGPT AI Chatgpt OpenAI Link3 — ## Google Gemini AI Link — ## Microsoft Copilot AI Link — ## Deep Seek AI Link — Read more…