This paper proposes a algorithm of phonemes extraction in korean character pattern recognition. The phonemes are classified into the patterns which are separable and connected with each other. The former is extracted by means of pattern matching in consideration of topological structure of ponemes and direction of stroke sequentially. The latter is extracted by means of index and window algorithm which are performed by a 3$\times$3 sequential local operation in the thinned character pattern.

There are two major fields for system effectiveness investogations-RAM analysis and performance(capacity) analysis. The investgation methods for system effectiveness are discussed. And two prototypes are presented for RAM analysis and performance analysis.