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IGCSE Grade 9 Computer Science (CS) Classes in Hosur

Live online IGCSE Grade 9 Computer Science (CS) coaching for students in Hosur, taught by Kajal Ma'am — 4.9/5 from 36 reviews. Free demo class first, no payment.

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Why this fits a Hosur student

Most Hosur schools follow the Tamil Nadu State Board (TN SB), with CBSE, ICSE/ISC and Cambridge schools alongside. We teach the CBSE, ICSE/ISC, Cambridge IGCSE, GSEB and NIOS computer subjects, not the TN SB computer paper itself, so this course suits a Hosur student in one of those schools.

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What IGCSE Grade 9 Computer Science (CS) covers

10 units. Tap any unit to see its topics.

011. Data Representation+
  • Number systems: binary, denary and hexadecimal
  • Converting between binary, denary and hexadecimal
  • Two's complement and binary arithmetic (binary shifts)
  • Text, sound and image representation
  • Measuring data storage (bit, byte, KiB, MiB, GiB, etc.)
  • Data compression: lossless and lossy
022. Data Transmission+
  • Packets and packet switching
  • Serial vs parallel, simplex/half-duplex/full-duplex transmission
  • Universal Serial Bus (USB)
  • Error detection: parity check, checksum, check digit, ARQ, echo check
  • Symmetric and asymmetric encryption
033. Hardware+
  • Computer architecture and the CPU; von Neumann model
  • Core, cache and clock speed; fetch-decode-execute cycle
  • Embedded systems
  • Input and output devices
  • Primary, secondary and off-line storage (magnetic, optical, solid state)
  • Sensors, microprocessors and control/monitoring systems
  • Logic gates (NOT, AND, OR, NAND, NOR, XOR)
044. Software+
  • System software vs application software
  • Operating systems and their functions
  • Interrupts and the role of the OS
  • High- and low-level languages; compilers, interpreters and assemblers
  • The relationship between hardware, firmware and software
055. The Internet and Its Uses+
  • The internet vs the world wide web; URLs
  • HTTP and HTTPS; web browsers and how web pages are retrieved
  • Cookies: session and persistent
  • Digital currency and blockchain
  • Cyber security threats (brute-force, data interception, DDoS, phishing, malware, etc.)
  • Keeping data safe: solutions and protection methods
066. Automated and Emerging Technologies+
  • Automated systems: sensors, microprocessors and actuators
  • Robotics and the characteristics of robots
  • Artificial intelligence: expert systems and machine learning
  • Advantages, disadvantages and applications of emerging technologies
077. Algorithm Design and Problem-Solving+
  • Program development life cycle (analysis, design, coding, testing)
  • Computational thinking: decomposition, abstraction, pattern recognition
  • Pseudocode and flowcharts
  • Standard methods of solution: linear/bubble sort, linear/binary search, totalling, counting
  • Trace tables and identifying/correcting errors
  • Validation, verification and suitable test data
088. Programming+
  • Declaring and using variables and constants; basic data types
  • Input, output, sequence, selection and iteration
  • Nested statements; counts and totals
  • One-dimensional and two-dimensional arrays
  • Procedures, functions and parameters; library routines
  • File handling; writing maintainable programs
099. Databases+
  • Single-table databases
  • Fields, records and data types; primary keys
  • Database structure (validation and basic SQL retrieval)
  • Querying and selecting data with structured query language (SQL)
1010. Boolean Logic+
  • Logic gates and their symbols
  • Constructing logic circuits from problem statements
  • Producing and completing truth tables
  • Writing logic expressions from circuits and vice versa

See the full IGCSE Grade 9 Computer Science (CS) course →

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Students across Hosur

We teach IGCSE Grade 9 Computer Science (CS) to students across Hosur and the rest of Tamil Nadu online, so nobody travels to a centre.

Every class is live at Indian Standard Time, in a small batch or one-to-one. Nothing is pre-recorded, so a student in Hosur asks questions in the moment. Recordings are provided for revision only.

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What students & parents say

4.9/5 from 36 verified reviews.

“
★★★★★

The instruction is exceptional, and I'm especially grateful for the meticulous attention to resolving even the slightest uncertainties. The Kwick Revision workshop provided extensive practice opportunities and the concepts were reiterated by ma'am for clarity, ensuring a comprehensive understanding.

K
Kenil
Student
“
★★★★★

Enrolling in the Kwick Revision Course was a decision that proved its value many times over. What I appreciate most are the meticulously prepared notes, the question papers, and the comprehensive practice materials provided.

P
Parth
Student
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Frequently asked questions

Do you teach IGCSE Grade 9 Computer Science (CS) to students in Hosur?+
Yes. Classes are live and online, so a student in Hosur joins the same small batch or one-to-one session as anyone else, at Indian Standard Time, taught by Kajal Ma'am.
Which board does this suit in Hosur?+
Most Hosur schools follow the Tamil Nadu State Board (TN SB), with CBSE, ICSE/ISC and Cambridge schools alongside. We teach the CBSE, ICSE/ISC, Cambridge IGCSE, GSEB and NIOS computer subjects, not the TN SB computer paper itself, so this course suits a Hosur student in one of those schools.
How many units are in IGCSE Grade 9 Computer Science (CS)?+
10 units.
Is there a free demo class for Hosur students?+
Yes. You see a real class before any payment. Message us on WhatsApp and we will arrange it.

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