IGCSE Grade 9 Computer Science (CS) Classes in Kolkata

Is this course right for a Kolkata student?

Most Kolkata schools follow the West Bengal Board (WBBSE/WBCHSE), with CBSE, ICSE/ISC and Cambridge schools alongside. We teach the CBSE, ICSE/ISC, Cambridge IGCSE, GSEB and NIOS computer subjects, not the WBBSE/WBCHSE computer paper itself, so this course suits a Kolkata student in one of those schools.

What IGCSE Grade 9 Computer Science (CS) covers

The course follows the full syllabus, 10 units.

• 1. 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
• 2. 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
• 3. Hardware
  Computer architecture and the CPU; von Neumann model; Core, cache and clock speed; fetch-decode-execute cycle; Embedded systems; Input and output devices
• 4. 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
• 5. 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
• 6. 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
• 7. 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
• 8. 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

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

Students from around Kolkata

A student anywhere in Kolkata can take IGCSE Grade 9 Computer Science (CS) with us — Ballygunge, Bengal, Lake or Martiniere included — because the class is online and there is no centre to travel to. Kolkata sits in West Bengal, where the West Bengal Board (WBBSE/WBCHSE) runs alongside the national boards, so we are asked about both.

How Kolkata students attend

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

What students & parents say

4.9/5 from 36 verified reviews.

Frequently asked questions