a small computer that contains a microprocessor as its central processor.
Microcomputer, an electronic device with a microprocessor as its central processing unit (CPU). Microcomputer was formerly a commonly used term for personal computers, particularly any of a class of small digital computers whose CPU is contained on a single integrated semiconductor chip.
We initially have 130 gallons of a acid solution and we need to change it to a acid solution, and for that it is necessary to evaporate gallons of water.
So, this situation can be mathemtically expressed as follows: