Task: Text Simplification
Input (English): the alu is a fundamental building block of the central processing unit -lrb- cpu -rrb- of a computer , and even the simplest microprocessors contain one for purposes such as maintaining timers.
Output (English): the alu is fundamental to the central processing unit -lrb- cpu -rrb- of the computer with even the simplest microprocessors having one for functions like maintaining timers.