My computer relies on two "processors"

The static one

and the moblie one

One numeral in inputed into the static procesor from the side of the machine.

This is the constant in my logic expression.

The next is put into the mobile processor via a "wand"

This value is the variable in my logic expression.

When both values are inputed to the processors, the motor on the side is turned on, moving the mobile processor along its track

For addition:

It will move along the track until the '0' of the mobile catches on the constant value.

The constant sticks out, and the zero hooks onto it. Then, the wand will show the value at which it is at.

The logic expression looks something like this.

input staticnum = staticnum

input mobilenum = mobilenum

zero = 0

for int zero=0; zero!= static num; zero++

{

mobilenum + = 1

}

display (mobilenum)

end

where x is the second value inputted into the moblie processor

For subtraction:

Instead of the zero hitting on the constant value, the variable hits it instead.

You read it by checking the 'subtraction display,' a seperate dispaly wand that stays at zero at all the starts

This changes the variable to be a third one, which starts at 0, not a varialbe value.

the logic loop looks more like this:

input staticnum = staticnum

input mobilenum = mobilenum

zero = 0

for int mobilenum = 0; mobilenum!= staticnum; mobilenum++

{

zero + = 1

}

display(zero)

end

This does only work if the number in the mobile processor is less than the one in the static one...

The whole process takes around 20 to 30 seconds