A semiconductor device having a thyristor-based memory device exhibits improved stability under adverse operating conditions related to temperature, noise, electrical disturbances and light. The rate matching device and method can be applied to a data communication system which uses one or both of a non-systematic code and a systematic code. A ratio between a head weight Wh and a club weight Wc is equal to or greater than 0. An integrated circuit device is housed in the shears and connected to the level for obtaining and storing data therefrom. Methods of use, and pharmaceutical compositions of these compounds are disclosed.