Systems ArchitectureIntroduction
The Restaurant Order System
Part of Fetch-Decode-Execute Cycle — GCSE Computer Science
This introduction covers The Restaurant Order System within Fetch-Decode-Execute Cycle for GCSE Computer Science. Revise Fetch-Decode-Execute Cycle in Systems Architecture for GCSE Computer Science with 15 exam-style questions and 12 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 1 of 9 in this topic. Use this introduction to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 1 of 9
Practice
15 questions
Recall
12 flashcards
The Restaurant Order System
Think of a restaurant kitchen getting orders. First, the waiter fetches the order slip from the counter (gets the instruction from memory). Then, the head chef decodes it - "Table 5 wants pasta" becomes "boil water, cook pasta, add sauce" (Control Unit interprets the instruction). Finally, the sous chefs execute the tasks - actually making the dish (ALU does the work). This cycle repeats billions of times per second - fetch the next order, decode what it means, execute the steps, then immediately fetch the next order!