CBSE Class 11 CS (Subject Code 083)

Unit 1: Computer Systems and Organisation

Comprehensive study material, chapter modules, solved conversions, Boolean logic proofs, and revision notes for Class 11 Computer Science.

Unit 1 Overview

Complete syllabus blueprint, architecture model, system bus breakdown, and core study roadmap.

Basic Organisation

CPU registers (PC, AC, MAR, MDR, IR), Input/Output devices, RAM vs ROM, Cache levels, and Memory Units.

Software & Translators

System software, utilities, device drivers, and detailed Compiler vs Interpreter comparison table.

Operating System

Process, Memory, File, Device, Security functions of OS, and CLI vs GUI vs Touch interfaces.

Boolean Logic

Logic gates (NOT, AND, OR, NAND, NOR, XOR, XNOR), truth tables, logic circuits, and step-by-step De Morgan proofs.

Number Systems

Binary, Octal, Decimal, Hexadecimal conversions with worked-out step-by-step examples.

Encoding Schemes

7-bit & 8-bit ASCII ranges, ISCII Indian script standard, and Unicode UTF-8 / UTF-32 formats.