The 1st one is a BJT(Bipolar Junction Transistor), which is indeed a transistor.
The 2nd one is a diode.
The 3rd is a resistor.
The 4th is an optic switch, which can be a LED switch.
Three inputs have 8 possible states.
Here they are:
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
Loop is a control structure that causes a statement or group of statements to repeat.Before entering a loop, the first input, or the accumulator where the total will be kept is retrieved to an initial value, usually zero.
A subscript cannot be an expression Is false about Arrays.
Answer: Option (4) is correct.
<u>Explanation:</u>
A subscript is any character or letter that is below any other character. It is mostly used in chemistry especially in formulas.
The Array represents order or a series. in case if array the subscript is written in Brackets. A subscript can be an expression also. Subscript can be any form of expression. it can be any expression in the form of integers. A subscript does not make use of 0 And 1.