Flight attendant. Flight attendants or cabin crew (also known as stewards/stewardesses, air hosts/hostesses, cabin attendants) are members of an aircrew employed by airlines primarily to ensure the safety and comfort of passengers aboard commercial flights, on select business jet aircraft, and on some military aircraft.
Half adder circuit. To understand what is a half adder you need to know what is an adder first. Adder circuit is a combinational digital circuit that is used for adding two numbers. A typical adder circuit produces a sum bit (denoted by S) and a carry bit (denoted by C) as the output.
A transistor is a three-terminal electronic component composed of semiconducting material such as silicon or germanium.   the purpose of a transistor is to use a small sign â¦ al to vary the conductivity of a piece of semiconductor.The tiny signal can switch a large current on and off. Or, the signal can be used to control a larger signal, so the transistor becomes an amplifier.ecause in this device the resistsnce between two terminale respectively collector and emitter is changed by changing the base voltage that is it transfers the resistance betw â¦ een emitter and collector therefore it is called as TRANSISTOR.(TRANSFER OF RESISTOR) Not exactly. Name.