CS fundamentals
Computer Organisation & Architecture
How a CPU runs your code: instruction formats, pipelining, caches and memory hierarchy.
Computer Organization & Architecture
Neso Academy, 100 videos, English
Step-by-step lectures with worked examples for every chapter.
2 picks, in suggested order
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Operating Systems
Processes, threads, scheduling, synchronisation, deadlocks and memory management: the OS questions every SDE interview asks.
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Computer Networks
From the OSI and TCP/IP models to routing, TCP, DNS and HTTP: how data actually moves between machines.
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DBMS & SQL
ER models, normalisation, transactions, indexing and SQL, from interview basics to how databases work inside.
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Theory of Computation & Compilers
Automata, regular expressions, grammars and how a compiler turns source code into machine code.
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