Lesson 3 — Two-Hand Press (AND)

Briefing

Two-hand safety control: both HAND_L and HAND_R must be pressed simultaneously before the press activates. Neither hand alone is enough. Contacts in series implement AND logic — all must be true for the rung to be true.

Objectives

• PRESS energises only when HAND_L AND HAND_R are both true
• Either hand alone must not energise the press

I/O Table

Your program will be tested against:

All test cases run automatically when you submit. Assertions are hidden until you pass.

1. #1Both hands pressed → PRESS on

   PRESS should activate with both hands pressed

2. #2Left hand only → PRESS off

   PRESS must not activate with only one hand