time delay, command-detonated, victim-operated
There are quite a few ways IED's are detonated. I would consider the following most common, but this is surely arguable:
Victim-operation, Time delay, Command-detonated
Those could be rigged to be detonated by cellular phones, wire or by the weight of the person or vehicle.
victom-operated time delay command-detonated
time delay victim operated command-detonated
Those cold be triggered by wire, Radio, Victim-operated and cell phones.
Time delay Command-detonated Victim-operated
Identify The Problem
Structured Design
ENIAC was first used in calculations for the hydrogen bomb
Define the design strategy
Identify The Problem
its is mamadingo
Clearly, the first step is to identify a need. You cannot start generating ideas with which to propose a design, until you know what need you are trying to satisfy.