The touch screen is the “brain” of CAL 8000. It optimizes the distribution of workload between each BC-6800 unit and decides which sample requires a blood smear. It displays the status of each BC-6800 or SC-120 installed on CAL 8000 as well as the volume of balance reagent. This intuitive software could tell the users all necessary information of CAL 8000 at any given time. Consequently, the users spend less time operating CAL 8000 and can arrange their working schedule better.