IGCSE Grade 9 Computer Science (CS) Classes in Dehradun

Is this course right for a Dehradun student?

Most Dehradun schools follow the Uttarakhand Board (UBSE), with CBSE, ICSE/ISC and Cambridge schools alongside. We teach the CBSE, ICSE/ISC, Cambridge IGCSE, GSEB and NIOS computer subjects, not the UBSE computer paper itself, so this course suits a Dehradun 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 Dehradun

A student anywhere in Dehradun can take IGCSE Grade 9 Computer Science (CS) with us — Academy, Clement, Dalanwala or Doon included — because the class is online and there is no centre to travel to. Dehradun sits in Uttarakhand, where the Uttarakhand Board (UBSE) runs alongside the national boards, so we are asked about both.

How Dehradun 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 Dehradun 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