Deep Dive: Why Use Low-Level?

Part of High & Low Level Languages · Section 6 of 9

Study NotesUnit: 3.4 Computer SystemsGCSE

This study notes covers Deep Dive: Why Use Low-Level? within High & Low Level Languages for GCSE Computer Science. Revise High & Low Level Languages in 3.4 Computer Systems for GCSE Computer Science with 15 exam-style questions and 8 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 6 of 9 in this topic. Use this study notes to connect the idea to the wider topic before moving on to questions and flashcards.

Deep Dive: Why Use Low-Level?

  • Embedded systems: Washing machines, car engines - limited memory
  • Device drivers: Need direct hardware communication
  • Time-critical: Real-time systems where speed matters
  • OS development: Operating system kernels need hardware access

Practice questions for High & Low Level Languages

Which of the following best describes machine code?

  • A. Instructions written using English-like keywords such as PRINT and IF
  • B. Instructions written as binary patterns of 0s and 1s that the CPU executes directly
  • C. Instructions written using short mnemonics such as MOV and ADD
  • D. Instructions that must be compiled before the CPU can run them
1 markfoundation

Give two advantages of low-level languages over high-level languages.

2 marksstandard

Quick recall flashcards

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