* Sequence control of 8 LEDs through 8255 port * Control of 2 relays * Operating a 7-segment display * Switch state input through 8255 port * SID/SOD Operation Introduction : This unit has been designed to train the students to handle basic input-output operations of the 8085 microprocessor through 8255 ports. The power supply, drivers and other hardware are prewired resulting in a greater reliability of operation. The students are expected to enter a few suggested programs and also to develop their own programs for a variety of input-output operations, which include : * Light the 8 LEDs in a cycle, in binary sequence, as a bar graph display etc. * Operate the 2 relays with software controlled timing * Operate the 7-segment display through segment control * Sense the state of the 4-switches as input and send out suitable signals to various output devices. * Study of SID/SOD

GF-3000 automatic blood cell analyzer is of exclusive sample dilution structure and automatic operation. Both blood coagulation and pre-diluted peripheral blood are automatically diluted, sampled, cleared. It dries interior and exterior and protects the operators.