Skip to content
IGCSE Computer Science 0478 · Data representation · 26

0478.1.1.08 — • Maximum binary number length of 16-bit: past paper questions

5 real questionsasked in 1 of the last 10 exam series2021–2025usually: Give, Convert

Real questions on 0478.1.1.08 — • maximum binary number length of 16-bit

The newest 5 of 5 written questions. Open one to see it on the real paper.

  1. 0478/12 · October/November 2025 · Q1a[1]

    Give the largest hexadecimal number that can be stored in a 12-bit register.

    See it on the paper →
  2. 0478/12 · October/November 2025 · Q1b[1]

    Give the largest denary number that can be stored in a 12-bit register.

    See it on the paper →
  3. 0478/12 · October/November 2025 · Q1c[2]

    Two toys have the hexadecimal codes 429 and 1A3. Convert the two hexadecimal codes to 12-bit binary numbers. 429 1A3

    See it on the paper →
  4. 0478/12 · October/November 2025 · Q1d[2]

    Convert the two binary numbers to hexadecimal numbers. 100010100001 011100001011 Working space (d) Two binary numbers that are stored in the registers are 100010100001 and 011100001011.

    See it on the paper →
  5. 0478/12 · February/March 2021 · Q1c[1]

    The hockey club wants to increase the number of people that can watch each match to 2000. The 8-bit binary register may no longer be able to store the value. Give the smallest number of bits that can be used to store the denary value 2000.

    See it on the paper →

What examiners said

Many candidates were able to correctly give 11 as the number of bits. Some candidates gave the binary value for 2000 in 11-bits but did not give the answer to the question.

— Examiner report, February/March 2021, 0478/12 Q1(c) (Cambridge)

Past papers, syllabus and examiner reports © UCLES (Cambridge University Press & Assessment). Questions are matched to topics from the official syllabus. AssessPro is independent and not endorsed by Cambridge.

0478.1.1.08 — • Maximum binary number length of 16-bit — IGCSE Computer Science 0478 past paper questions | AssessPro