Users of an urban smart-charging hub can reserve electric vehicle (EV) charging slots. "Priority" subscribers pay a flat monthly rate and get unlimited access to reservation slots. "Eco" subscribers receive a 15% discount on the standard charging rate if they book a slot during off-peak hours (00:00 to 05:00). A central server manages the reservation and billing system.
Complete the table to show the missing Input, Process, and Output for this system.
| Input | Process | Output |
|---|---|---|
| [Box A] | Retrieve subscriber ID to determine subscription tier | Subscription tier (Priority or Eco) |
| Chosen charging station ID, reservation date and time | [Box B] | Reservation confirmation message / Station unavailable warning |
| Eco subscriber status (Yes/No), standard charging fee | If Eco subscriber and time is off-peak, reduce standard charging fee by 15% | [Box C] |
Practise Edexcel GCSE Computer Science Constructs with exam-style questions for GCSE Computer Science. 61 questions covering Structural components of programs and Writing programs with control constructs, matched to the Edexcel GCSE Computer Science (1CP2) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.