An automated bank vault security system uses inputs from a keypad, a biometric scanner, and an emergency lockdown switch to determine whether the vault door lock should release.
The table shows the inputs into the system and the meaning of each input value:
| Letter | Input device | Input of 1 | Input of 0 |
|---|---|---|---|
| E | Emergency lockdown switch | Lockdown is ACTIVE | Lockdown is INACTIVE |
| K | Keypad PIN entry | Code is correct | Code is incorrect |
| F | Fingerprint biometric scanner | Biometric match found | Biometric mismatch |
The lock release mechanism (UUU) is designed to unlock (U=1U = 1U=1) only when the emergency lockdown is INACTIVE, and either the keypad code is correct OR a fingerprint biometric match is found.
Draw a logic diagram for the vault security system using standard 2-input logic gates (AND, OR, NOT).
Boolean logic Questions
Practise OCR GCSE Computer Science Boolean logic with exam-style questions for GCSE Computer Science. 27 questions, matched to the OCR GCSE Computer Science (J277) specification and written in Component 01 and Component 02 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.