Spa computers ltd. Offers programmable logic controllers. Spamicro programmable logic controllers can handle various inputs and outputs in the range of 20 i/os to a maximum of 1024 i/os. The modular type of plcs can handle both analogue as well as digital inputs and outputs, pi, pid functions. Special modules available are communication cards, ethernet cards, thermocouple cards, rtd modules and quadrature pulse input modules. Programming of spamicro range of plcs can be done either through pc compatible or a hand held programming terminal by using ladder programming language combined with powerful function block elements.