You have a raspberry pi connected to all the sensors and a code running to trigger if the sensors are triggered. Each sensor and keypad would run to a different input on the pi. They should al be able to be powered with a single cell lipo. Is that what you are asking?
I believe photoshop, or illustrator
Answer:
A. Relative cell reference.
Explanation:
A relative cell reference is like a pointer to a cell or range of cell in Excel. In Excel all cell references, by default, are relative cell references.
In the given instance, the cell address A4 in a formula means it is a relative cell reference. If there would have been a $ sign before A4, then it will be an absolute cell reference. But since, it is without dollar sign, it is a relative cell reference.
Therefore, option A is correct.
Explanation:
The precision in double values is twice as compared to float values.Hence double have smaller rounding errors as compared to float variables .A double is of 64 bits and float is of 32 bits usually hence floats have more rounding errors and on more number than doubles.Double has 15 decimal digits of precision and float has only 7 decimal digits for precision.
